Questions

Power outage, now my cpu turns on and then off after 2 seconds max!

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Power outage, now my cpu turns on and then off after 2 seconds max!

naultr6
We had a power outage about a week ago and I had turned my cpu off since it was a planned power outage. I had it plugged into a surge protector and all that. The next morning when I went to turn it on, all of my LED lightes came on, fans turn on (to include the cpu fan) and then it just dies like there is no more power running through the system. No bios screen, no chance to load anything. It had been working fine the night before and for the previous 6 months without a hitch.

I'm wondering if the power outage could have fried my whole system or is it just likely my power supply and how can I (a non techy with limited resources) test to see what the problem is.

Step by step instructions if you guys can please, this was my first build and my friend helped me put it together.

this is my power supply:
KINGWIN ABT-600CW ATX 12V Ver.2.2 600W Modular Power Supply
  • +
    1 Votes
    bart777

    If the CPU fan has come loose or is not seatd correctly the PC will detect the cooling problem and shut itself down to protect the processor.

    Open the machine up and verify that the fan is seated correctly, plugged in and starts when the PC is powered up.

    That's where I would start before you start replacing parts.

    +
    0 Votes
    naultr6

    As I stated before the only change was the power outage. The computer had been running normaly without a hicup for over 6 months.

    +
    0 Votes
    frostbit_ak

    Just for grins, try plugging something like a hair dryer into the outlet that your PC is plugged into and see if the hair dryer stops working. I had an outlet go bad after our power co. did some work. The surge protector was fine, the actual plug in the wall was bad.

    +
    0 Votes
    naultr6

    everything else I have plugged into the strip works without a hitch. In fact, i've plugged my laptop power cable into the socket my desktop was in and it works just fine. It really doesn't stay on for more than a second. It's seeming to me that it isn't holding a charge to keep the cpu on long enough to do any sort of diagnostic or startup or anything. I've talked to some of the techies at work and they're thinking its the power supply as well.

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    0 Votes
    simplyfet

    just experiencing the same problem. I kept on browsing to forums but still no answer with my problem. I'm sure that PSU isn't the problem because I already replaced it with new one. is there anyone who could help solve this? it will be very much appreciated :)

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    SmartAceW0LF

    I have experienced many situations similar to your description which were caused by a PCI Modem or Network card. Before proceeding any further be sure to remove either of these if they are in your system and then try to boot again.

    In the event of a storm or power outtage, it has been my personal experience that "Surge Protectors" provide only one real advantageous utility. That being a centralized place to plug everything into such that it is only necessary to unplug one wire to effectively isolate your system from the household electricity.

    Fact: rarely (if ever) does an electrical "surge" ruin your electronics. More often than not, it will be the resultant "Brown-out" or LACK of electricity which kills electrical appliances and electronics. NOTE: There is one exception to the above. YOUR SURGE PROTECTOR WAS NOT DESIGNED FOR -NOR WILL IT- PROTECT YOUR APPLIANCES FROM LIGHTNING. The only thing that will serve as protection from lightning -short of spending a LOT of money- is to unplug the appliances. Further, even following the above advice, it is important to remember that effectively isolating said appliances is not fully achieved without also removing any LAN cables and/or Phone lines as well. This is often overlooked.
    Repeated interruption of electricity is likewise hard on electronics. Again, more from the resultant starving of electricity than anything else. Your best protection for this is a UPS. But even a UPS will not protect you from lightning.
    Given that I knew nothing other than what you describe here I would
    1.) Check the CPU fan to be assured it is spinning (and continues to do so) on powering the machine. If yes go to number 2, if not replace it and try again.
    2.) Remove any internal modems or network cards that are not built into the motherboard and try again. If it still fails to work...
    3.) Check PSU. Note: yes there are inexpensive devices that you can plug the PSU into to test it, but it is not unusual for these to register a PSU as good even when it is not. It might not be cost prohibitive to simply replace the PSU and try again if your system is not of a high end nature.

    +
    0 Votes
    simplyfet

    all of my LED lightes came on, fans turn on (to include the cpu fan) and then it just dies like there is no more power running through the system. No bios screen, no chance to load anything. It had been working fine the night before and for the previous 6 months without a hitch. but after cleaning processor and its fan. problem become worst. whenever i turned on the AVR the CPU starts automatically but everything stops after 2 to 3 secs.. worst is, i cant turn it on anymore.. any idea bout that?

    +
    1 Votes

    You had said this was your first build.
    Now, when you built this rig are the parts second hand or brand new?
    If brand new then you have the warranty to back you up by returning the motherboard.
    If second hand then you will need to look at the motherboard and see if there are any bulging capacitors like here:
    http://www.thenakedpc.com/dan/Bulging_Capacitors/index.html
    if you have capacitors that are bulging then you will need a new motherboard or if you are good at soldering you could replace them for a few pence/cents.

    +
    0 Votes
    SmartAceW0LF

    Good one Peconet, for even further information on this subject, its cures, parts and comprehensive tutorials on repairing it yourself or even quotes on having the site author perform the work, try www.badcaps.net.

    +
    0 Votes

    Wow

    Creeping Critter

    I had the exact same problem with my system. I couldnt find the answer until my friend found out that my cpu fan wasnt working at all or would start spinning and then stop thereby my system would shut off after a few seconds. I guess i could have used this info 6 months ago.

    +
    1 Votes
    rfolden

    Unplug the power cord going into the PC at the PC end. Now, unplug that same cord at the Surge Protector end. Wait 5 min. Plug the power cord back into the back of the PC and then directly into the wall. Does the PC then work fine? GREAT! NO? Power Supply in PC toastado. IF the PC worked when plugged directly into the wall then Turn PC off. Plug power cord (MALE end) back into surge protector/power stip. All good? great! Not good? Surge protector has been smoked.

    Otherwise, THEN crack open the case and start troubleshooting MB connections, etc.

    Always check the obvious first, unless you know 100% what the problem is.

    +
    0 Votes
    pisono

    Ive had this problem before. I removed the M/B battery for a few minutes then replaced it and found my system booting properly. Try booting with the M/B boot disk. Let us all know how you resolved the issue.

    +
    2 Votes
    Brian Grimm

    I have an Acer computer with similar problems. After some searching, I found out that the video card had failed. I'm not sure if it was drawing too much current, or sending a signal to the MB, but replacing the card solved the problem.

    Good luck!

    +
    2 Votes
    willcomp

    Check that power switch button is free and not sticking. Better yet, remove power switch leads and use a jumper or small screwdriver to short power switch pins on front panel connector. If you have a reset switch on case, use its lead in place of power switch lead. Reset switches are momentary contact switches identical to power switches.

    +
    0 Votes
    ricardo

    This answer may look trivial but is very likely. Did you spill some beer or coffee over the switch? I had this once with a customer machine, and sold him a new machine because he was in a huge hurry to use his computer, but eventually found that the switch was the problem after I realised that the system worked perfectly out of the chassis.

    +
    1 Votes
    dave

    Any better luck with just the bare minimum?

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    rdavis

    What type surge protector are You using?
    I would start at the wall and make sure I had good power to the computer.
    If the power to the computer is on the low side (a brown out) the start up current in rush will pull the voltage down and the computer's power supply will turn off.
    Good luck

    +
    2 Votes
    michael

    I had similar problem years ago,after a lot of investigation I found the cpu cooler had worked loose and the CPU overheated and shut down.
    The timing with the outage could simply be a coincidence .
    Always use a uninterrupted power supply,they are cheap and so worthwhile

    +
    1 Votes
    JefferyS_TheTech

    It's been my experience that most often when a power supply turns off after a few seconds that it's because there is a short in the system. Like someone already said remove every thing but the system board, memory and video card, actually you can leave the video card out, most pc's will beep or something with no video card but if it stays on your system board and memory are probably good. Make sure to unplug all external devices even the keyboard and mouse. If it stays on then start adding things back into the system till you find the problem device. Like someone also mentioned I've seen a few that the cmos battery would go bad and not let the system start and clearing the cmos sometimes helps. Don't discount the power supply either. If it is shorted it may turn off right away too. If nothing else seams to work then I'd try borrowing a power supply just make sure the system board connectors have the right number of pins, If it is a lower wattage power supply then remove everything but the memory and video card, if it stays on for any length of time you probably have a bad power supply or get on of those power supply checkers. I personally haven't used one but if the power supply doesn't stay on for that then it's probably a bad power supply. I hope this helps.

    +
    0 Votes
    IcebergTitanic

    I've seen this and similar symptoms several times, and every single time they were the power supply. The capacitors and other electronics on those things are sensitive to power problems, and can go out easily. I would see if you can borrow another power supply and test it real quick, but I would put down money that's the problem.

    +
    0 Votes
    brocksamson2011

    I was going to confirm what some other have posted, check your mobo caps, if any are swollen on top - replace the mobo or look at a new system...power supply is an option, i have heard of those PS testers - havent used them thou. But here is a weird one that happened a previous service call...The NIC driver....client did say there was a storm the night before - I think no fans would turn but the LED's on the case would flicker so i thought PS or power issue as well...i also noticed a cheap power splitter not a surge suppressor and a black tape repaired medium duty extension cable, of course they were unwilling to move the tower closer to the outlet but they had a newer heavy duty extension cable and i sold them a real surge suppressor, when it still didnt work i checked the outlet for ground/power with a volt meter =fine...moved the tower to try directly in the outlet and others and it worked just fine...moved it back...same issue...WTF? After checking over everything again with the tower in the original spot, i found it would only power on with the ethernet cable unplugged....now that was a weird new one i had never seen before i thought certainly an issue with the integrated NIC or mobo....but on a whim i decided to reinstall the NIC driver....Problem Solved! Now i still have no idea how a storm could have caused a driver issue but what the **** it worked?

    +
    1 Votes
    TheChas

    One thing I did not see mentioned in the thread was to check / replace the CMOS battery and rest the CMOS.

    I have seen weak CMOS batteries cause bad data in the CMOS memory.

    As the CMOS battery is only used when AC power is off and not when you just turn off the computer, many people are not aware that their CMOS battery is weak until the system malfunctions after a power outage or even moving the computer.

    Chas

    +
    0 Votes
    simplyfet

    just experiencing the same problem. I kept on browsing to forums but still no answer with my problem. I'm sure that PSU isn't the problem because I already replaced it with new one. is there anyone who could help solve this? it will be very much appreciated :)

    +
    0 Votes
    SmartAceW0LF

    I have experienced many situations similar to your description which were caused by a PCI Modem or Network card. Before proceeding any further be sure to remove either of these if they are in your system and then try to boot again.

    In the event of a storm or power outtage, it has been my personal experience that "Surge Protectors" provide only one real advantageous utility. That being a centralized place to plug everything into such that it is only necessary to unplug one wire to effectively isolate your system from the household electricity.

    Fact: rarely (if ever) does an electrical "surge" ruin your electronics. More often than not, it will be the resultant "Brown-out" or LACK of electricity which kills electrical appliances and electronics. NOTE: There is one exception to the above. YOUR SURGE PROTECTOR WAS NOT DESIGNED FOR -NOR WILL IT- PROTECT YOUR APPLIANCES FROM LIGHTNING. The only thing that will serve as protection from lightning -short of spending a LOT of money- is to unplug the appliances. Further, even following the above advice, it is important to remember that effectively isolating said appliances is not fully achieved without also removing any LAN cables and/or Phone lines as well. This is often overlooked.
    Repeated interruption of electricity is likewise hard on electronics. Again, more from the resultant starving of electricity than anything else. Your best protection for this is a UPS. But even a UPS will not protect you from lightning.
    Given that I knew nothing other than what you describe here I would
    1.) Check the CPU fan to be assured it is spinning (and continues to do so) on powering the machine. If yes go to number 2, if not replace it and try again.
    2.) Remove any internal modems or network cards that are not built into the motherboard and try again. If it still fails to work...
    3.) Check PSU. Note: yes there are inexpensive devices that you can plug the PSU into to test it, but it is not unusual for these to register a PSU as good even when it is not. It might not be cost prohibitive to simply replace the PSU and try again if your system is not of a high end nature.

    +
    1 Votes

    You had said this was your first build.
    Now, when you built this rig are the parts second hand or brand new?
    If brand new then you have the warranty to back you up by returning the motherboard.
    If second hand then you will need to look at the motherboard and see if there are any bulging capacitors like here:
    http://www.thenakedpc.com/dan/Bulging_Capacitors/index.html
    if you have capacitors that are bulging then you will need a new motherboard or if you are good at soldering you could replace them for a few pence/cents.

    +
    0 Votes

    Wow

    Creeping Critter

    I had the exact same problem with my system. I couldnt find the answer until my friend found out that my cpu fan wasnt working at all or would start spinning and then stop thereby my system would shut off after a few seconds. I guess i could have used this info 6 months ago.

    +
    1 Votes
    rfolden

    Unplug the power cord going into the PC at the PC end. Now, unplug that same cord at the Surge Protector end. Wait 5 min. Plug the power cord back into the back of the PC and then directly into the wall. Does the PC then work fine? GREAT! NO? Power Supply in PC toastado. IF the PC worked when plugged directly into the wall then Turn PC off. Plug power cord (MALE end) back into surge protector/power stip. All good? great! Not good? Surge protector has been smoked.

    Otherwise, THEN crack open the case and start troubleshooting MB connections, etc.

    Always check the obvious first, unless you know 100% what the problem is.

    +
    0 Votes
    pisono

    Ive had this problem before. I removed the M/B battery for a few minutes then replaced it and found my system booting properly. Try booting with the M/B boot disk. Let us all know how you resolved the issue.

    +
    2 Votes
    Brian Grimm

    I have an Acer computer with similar problems. After some searching, I found out that the video card had failed. I'm not sure if it was drawing too much current, or sending a signal to the MB, but replacing the card solved the problem.

    Good luck!

    +
    2 Votes
    willcomp

    Check that power switch button is free and not sticking. Better yet, remove power switch leads and use a jumper or small screwdriver to short power switch pins on front panel connector. If you have a reset switch on case, use its lead in place of power switch lead. Reset switches are momentary contact switches identical to power switches.

    +
    1 Votes
    dave

    Any better luck with just the bare minimum?

  • +
    1 Votes
    bart777

    If the CPU fan has come loose or is not seatd correctly the PC will detect the cooling problem and shut itself down to protect the processor.

    Open the machine up and verify that the fan is seated correctly, plugged in and starts when the PC is powered up.

    That's where I would start before you start replacing parts.

    +
    0 Votes
    naultr6

    As I stated before the only change was the power outage. The computer had been running normaly without a hicup for over 6 months.

    +
    0 Votes
    frostbit_ak

    Just for grins, try plugging something like a hair dryer into the outlet that your PC is plugged into and see if the hair dryer stops working. I had an outlet go bad after our power co. did some work. The surge protector was fine, the actual plug in the wall was bad.

    +
    0 Votes
    naultr6

    everything else I have plugged into the strip works without a hitch. In fact, i've plugged my laptop power cable into the socket my desktop was in and it works just fine. It really doesn't stay on for more than a second. It's seeming to me that it isn't holding a charge to keep the cpu on long enough to do any sort of diagnostic or startup or anything. I've talked to some of the techies at work and they're thinking its the power supply as well.

    +
    0 Votes
    simplyfet

    just experiencing the same problem. I kept on browsing to forums but still no answer with my problem. I'm sure that PSU isn't the problem because I already replaced it with new one. is there anyone who could help solve this? it will be very much appreciated :)

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    SmartAceW0LF

    I have experienced many situations similar to your description which were caused by a PCI Modem or Network card. Before proceeding any further be sure to remove either of these if they are in your system and then try to boot again.

    In the event of a storm or power outtage, it has been my personal experience that "Surge Protectors" provide only one real advantageous utility. That being a centralized place to plug everything into such that it is only necessary to unplug one wire to effectively isolate your system from the household electricity.

    Fact: rarely (if ever) does an electrical "surge" ruin your electronics. More often than not, it will be the resultant "Brown-out" or LACK of electricity which kills electrical appliances and electronics. NOTE: There is one exception to the above. YOUR SURGE PROTECTOR WAS NOT DESIGNED FOR -NOR WILL IT- PROTECT YOUR APPLIANCES FROM LIGHTNING. The only thing that will serve as protection from lightning -short of spending a LOT of money- is to unplug the appliances. Further, even following the above advice, it is important to remember that effectively isolating said appliances is not fully achieved without also removing any LAN cables and/or Phone lines as well. This is often overlooked.
    Repeated interruption of electricity is likewise hard on electronics. Again, more from the resultant starving of electricity than anything else. Your best protection for this is a UPS. But even a UPS will not protect you from lightning.
    Given that I knew nothing other than what you describe here I would
    1.) Check the CPU fan to be assured it is spinning (and continues to do so) on powering the machine. If yes go to number 2, if not replace it and try again.
    2.) Remove any internal modems or network cards that are not built into the motherboard and try again. If it still fails to work...
    3.) Check PSU. Note: yes there are inexpensive devices that you can plug the PSU into to test it, but it is not unusual for these to register a PSU as good even when it is not. It might not be cost prohibitive to simply replace the PSU and try again if your system is not of a high end nature.

    +
    0 Votes
    simplyfet

    all of my LED lightes came on, fans turn on (to include the cpu fan) and then it just dies like there is no more power running through the system. No bios screen, no chance to load anything. It had been working fine the night before and for the previous 6 months without a hitch. but after cleaning processor and its fan. problem become worst. whenever i turned on the AVR the CPU starts automatically but everything stops after 2 to 3 secs.. worst is, i cant turn it on anymore.. any idea bout that?

    +
    1 Votes

    You had said this was your first build.
    Now, when you built this rig are the parts second hand or brand new?
    If brand new then you have the warranty to back you up by returning the motherboard.
    If second hand then you will need to look at the motherboard and see if there are any bulging capacitors like here:
    http://www.thenakedpc.com/dan/Bulging_Capacitors/index.html
    if you have capacitors that are bulging then you will need a new motherboard or if you are good at soldering you could replace them for a few pence/cents.

    +
    0 Votes
    SmartAceW0LF

    Good one Peconet, for even further information on this subject, its cures, parts and comprehensive tutorials on repairing it yourself or even quotes on having the site author perform the work, try www.badcaps.net.

    +
    0 Votes

    Wow

    Creeping Critter

    I had the exact same problem with my system. I couldnt find the answer until my friend found out that my cpu fan wasnt working at all or would start spinning and then stop thereby my system would shut off after a few seconds. I guess i could have used this info 6 months ago.

    +
    1 Votes
    rfolden

    Unplug the power cord going into the PC at the PC end. Now, unplug that same cord at the Surge Protector end. Wait 5 min. Plug the power cord back into the back of the PC and then directly into the wall. Does the PC then work fine? GREAT! NO? Power Supply in PC toastado. IF the PC worked when plugged directly into the wall then Turn PC off. Plug power cord (MALE end) back into surge protector/power stip. All good? great! Not good? Surge protector has been smoked.

    Otherwise, THEN crack open the case and start troubleshooting MB connections, etc.

    Always check the obvious first, unless you know 100% what the problem is.

    +
    0 Votes
    pisono

    Ive had this problem before. I removed the M/B battery for a few minutes then replaced it and found my system booting properly. Try booting with the M/B boot disk. Let us all know how you resolved the issue.

    +
    2 Votes
    Brian Grimm

    I have an Acer computer with similar problems. After some searching, I found out that the video card had failed. I'm not sure if it was drawing too much current, or sending a signal to the MB, but replacing the card solved the problem.

    Good luck!

    +
    2 Votes
    willcomp

    Check that power switch button is free and not sticking. Better yet, remove power switch leads and use a jumper or small screwdriver to short power switch pins on front panel connector. If you have a reset switch on case, use its lead in place of power switch lead. Reset switches are momentary contact switches identical to power switches.

    +
    0 Votes
    ricardo

    This answer may look trivial but is very likely. Did you spill some beer or coffee over the switch? I had this once with a customer machine, and sold him a new machine because he was in a huge hurry to use his computer, but eventually found that the switch was the problem after I realised that the system worked perfectly out of the chassis.

    +
    1 Votes
    dave

    Any better luck with just the bare minimum?

    +
    0 Votes
    hyein2000

    I had experienced in this kind of situations. I doubt it was a virus malfunction. I played an IT role in the company where I am working today. At the first day of my job, the previous IT leaved all the computer with a problem(ei. computer viruses, power on problem just like yours, malicious internet files, etc). What I did with this problem is, I bought/replace a new motherboard of the PCs that experiencing power outage, reformat the hard disk, and re-install a fresh copy of software.
    The computers are all running fine for 8 months now.
    Just 3 simple steps:
    1. Replace new motherboard.
    2. Reformat the hard disk. (Don't forget to back-up the needed files and applications)
    3. Install operating systems and software application.

    Try this one!

    +
    0 Votes
    rdavis

    What type surge protector are You using?
    I would start at the wall and make sure I had good power to the computer.
    If the power to the computer is on the low side (a brown out) the start up current in rush will pull the voltage down and the computer's power supply will turn off.
    Good luck

    +
    2 Votes
    michael

    I had similar problem years ago,after a lot of investigation I found the cpu cooler had worked loose and the CPU overheated and shut down.
    The timing with the outage could simply be a coincidence .
    Always use a uninterrupted power supply,they are cheap and so worthwhile

    +
    1 Votes
    JefferyS_TheTech

    It's been my experience that most often when a power supply turns off after a few seconds that it's because there is a short in the system. Like someone already said remove every thing but the system board, memory and video card, actually you can leave the video card out, most pc's will beep or something with no video card but if it stays on your system board and memory are probably good. Make sure to unplug all external devices even the keyboard and mouse. If it stays on then start adding things back into the system till you find the problem device. Like someone also mentioned I've seen a few that the cmos battery would go bad and not let the system start and clearing the cmos sometimes helps. Don't discount the power supply either. If it is shorted it may turn off right away too. If nothing else seams to work then I'd try borrowing a power supply just make sure the system board connectors have the right number of pins, If it is a lower wattage power supply then remove everything but the memory and video card, if it stays on for any length of time you probably have a bad power supply or get on of those power supply checkers. I personally haven't used one but if the power supply doesn't stay on for that then it's probably a bad power supply. I hope this helps.

    +
    0 Votes
    IcebergTitanic

    I've seen this and similar symptoms several times, and every single time they were the power supply. The capacitors and other electronics on those things are sensitive to power problems, and can go out easily. I would see if you can borrow another power supply and test it real quick, but I would put down money that's the problem.

    +
    0 Votes
    brocksamson2011

    I was going to confirm what some other have posted, check your mobo caps, if any are swollen on top - replace the mobo or look at a new system...power supply is an option, i have heard of those PS testers - havent used them thou. But here is a weird one that happened a previous service call...The NIC driver....client did say there was a storm the night before - I think no fans would turn but the LED's on the case would flicker so i thought PS or power issue as well...i also noticed a cheap power splitter not a surge suppressor and a black tape repaired medium duty extension cable, of course they were unwilling to move the tower closer to the outlet but they had a newer heavy duty extension cable and i sold them a real surge suppressor, when it still didnt work i checked the outlet for ground/power with a volt meter =fine...moved the tower to try directly in the outlet and others and it worked just fine...moved it back...same issue...WTF? After checking over everything again with the tower in the original spot, i found it would only power on with the ethernet cable unplugged....now that was a weird new one i had never seen before i thought certainly an issue with the integrated NIC or mobo....but on a whim i decided to reinstall the NIC driver....Problem Solved! Now i still have no idea how a storm could have caused a driver issue but what the **** it worked?

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    1 Votes
    TheChas

    One thing I did not see mentioned in the thread was to check / replace the CMOS battery and rest the CMOS.

    I have seen weak CMOS batteries cause bad data in the CMOS memory.

    As the CMOS battery is only used when AC power is off and not when you just turn off the computer, many people are not aware that their CMOS battery is weak until the system malfunctions after a power outage or even moving the computer.

    Chas

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    0 Votes
    simplyfet

    just experiencing the same problem. I kept on browsing to forums but still no answer with my problem. I'm sure that PSU isn't the problem because I already replaced it with new one. is there anyone who could help solve this? it will be very much appreciated :)

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    0 Votes
    SmartAceW0LF

    I have experienced many situations similar to your description which were caused by a PCI Modem or Network card. Before proceeding any further be sure to remove either of these if they are in your system and then try to boot again.

    In the event of a storm or power outtage, it has been my personal experience that "Surge Protectors" provide only one real advantageous utility. That being a centralized place to plug everything into such that it is only necessary to unplug one wire to effectively isolate your system from the household electricity.

    Fact: rarely (if ever) does an electrical "surge" ruin your electronics. More often than not, it will be the resultant "Brown-out" or LACK of electricity which kills electrical appliances and electronics. NOTE: There is one exception to the above. YOUR SURGE PROTECTOR WAS NOT DESIGNED FOR -NOR WILL IT- PROTECT YOUR APPLIANCES FROM LIGHTNING. The only thing that will serve as protection from lightning -short of spending a LOT of money- is to unplug the appliances. Further, even following the above advice, it is important to remember that effectively isolating said appliances is not fully achieved without also removing any LAN cables and/or Phone lines as well. This is often overlooked.
    Repeated interruption of electricity is likewise hard on electronics. Again, more from the resultant starving of electricity than anything else. Your best protection for this is a UPS. But even a UPS will not protect you from lightning.
    Given that I knew nothing other than what you describe here I would
    1.) Check the CPU fan to be assured it is spinning (and continues to do so) on powering the machine. If yes go to number 2, if not replace it and try again.
    2.) Remove any internal modems or network cards that are not built into the motherboard and try again. If it still fails to work...
    3.) Check PSU. Note: yes there are inexpensive devices that you can plug the PSU into to test it, but it is not unusual for these to register a PSU as good even when it is not. It might not be cost prohibitive to simply replace the PSU and try again if your system is not of a high end nature.

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    1 Votes

    You had said this was your first build.
    Now, when you built this rig are the parts second hand or brand new?
    If brand new then you have the warranty to back you up by returning the motherboard.
    If second hand then you will need to look at the motherboard and see if there are any bulging capacitors like here:
    http://www.thenakedpc.com/dan/Bulging_Capacitors/index.html
    if you have capacitors that are bulging then you will need a new motherboard or if you are good at soldering you could replace them for a few pence/cents.

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    0 Votes

    Wow

    Creeping Critter

    I had the exact same problem with my system. I couldnt find the answer until my friend found out that my cpu fan wasnt working at all or would start spinning and then stop thereby my system would shut off after a few seconds. I guess i could have used this info 6 months ago.

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    1 Votes
    rfolden

    Unplug the power cord going into the PC at the PC end. Now, unplug that same cord at the Surge Protector end. Wait 5 min. Plug the power cord back into the back of the PC and then directly into the wall. Does the PC then work fine? GREAT! NO? Power Supply in PC toastado. IF the PC worked when plugged directly into the wall then Turn PC off. Plug power cord (MALE end) back into surge protector/power stip. All good? great! Not good? Surge protector has been smoked.

    Otherwise, THEN crack open the case and start troubleshooting MB connections, etc.

    Always check the obvious first, unless you know 100% what the problem is.

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    0 Votes
    pisono

    Ive had this problem before. I removed the M/B battery for a few minutes then replaced it and found my system booting properly. Try booting with the M/B boot disk. Let us all know how you resolved the issue.

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    2 Votes
    Brian Grimm

    I have an Acer computer with similar problems. After some searching, I found out that the video card had failed. I'm not sure if it was drawing too much current, or sending a signal to the MB, but replacing the card solved the problem.

    Good luck!

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    2 Votes
    willcomp

    Check that power switch button is free and not sticking. Better yet, remove power switch leads and use a jumper or small screwdriver to short power switch pins on front panel connector. If you have a reset switch on case, use its lead in place of power switch lead. Reset switches are momentary contact switches identical to power switches.

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    1 Votes
    dave

    Any better luck with just the bare minimum?