Questions

Computer turning off and on, on its own....

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5 Votes
Locked

Computer turning off and on, on its own....

Slayer_
Ok, so this is strange.

It started off two days ago, I closed a cabinet in my room, and when I stood up, my computer turned off and restarted (my computer is set to stay off in a power outage). I figured, maybe it vibrated the video card, its happened before. Ok.
So I wiggle the tower a little, no issues. Stand up, walk passed it from right to left across the front of it, and it restarts again, wtf?

It didn't occur to me yet, but ok, so I just turned it back off (held power button) and walk away. I came back to put the item back in the cabinet, walked passed the machine from right to left again and the computer started itself!
So I waited for it, got to the login screen and it froze at the login....
So I hard restarted it, froze immediately after login, hard restarted again and it was running, but suddenly now, it didn't like resolutions under 1280 x 1024, anything less and it left about 50% black space on the screen on either side (25% on the left, 25% on the right). So I rebooted, I could see the windows logo and post was getting squished. Then it booted up again and 3 seconds after logging in, the screen turned black and white!
I thought maybe my old monitor dying, so I turned on the second monitor and turned on duel view, black and white on both!

So reboot again, same problem. So I go update the video drivers. Problem solved, but it still hates the resolutions. Ok, screw it, moving on.
Last night, it shut down again while watching a movie, it would not beep at the post for the first few tries, then it fired up after I unplugged it for a bit.

Now brings me to today, when I made the real connection.
I fired it up, and walked out to change the TV channel, I came back to grab the stereo remote out of the cabinet, and when I walked passed the computer, from right to left, I heard it restart. So I stepped back, and repeated my walk, and sure enough, it restarted again the very moment I stepped on the carpet.

So I tried standing there, lifting my foot up and down, etc, nothing. Only when I walked passed it. I made sure I did not rub the case, I even tried walking passed it naked, it still restarted! Then I closed the front door on my case (One of those cases that can cover the CD drives) and walked by it, it restarted one more time, so I tried again, on my last walk through, my monitor made a click sound and the video re snapped to the edges properly again. And it has stopped restarting when I walk passed it (for now anyways). I now take the long way around my computer to avoid walking in front of it.


WTF????? Any thoughts?

Edit-
I double checked, all my games that suddenly had problems with the resolution are fine again.


Edit-
Here is a folder of images.
The silver computer is the one with the problem. Its ventilation is on the front, left and rear, the right side is where the board is mounted, so no fans. So I can't see there being any ventilation issues.
http://trevorsarchives.homenet.org/temp/PC%20Pics/


Edit-
It has started doing it again. I have removed the filter on the power, its still doing it. But the monitor and display seem fine so far.

Edit-
Confirmed that the monitor is causing some problems, I can smack it and have the edges of the screen wiggle or even snap to the sides, to the top, etc.
By keeping the door closed the restarting has stopped. I'm starting to wonder if static is affecting the reset button, the next time I am in the case I am going to unplug the reset button and see if that solves the problem.
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1 Votes
gario

I had a similiar with an machine and after replacing all the peripherals, it turned out thta my mother board was the culprit.

Good luck!
Garo

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2 Votes
jpnagle59

Do you have a wood floor, or concrete? It really does not matter, all floor types will flex and move. I would remove all peripherals to the machine, and move all other electrical items- computers, TV's - etc..away. BUT do not move your computer with the 'ghosts' in it at-all if you can. Do the 'mystery' walk again, (everyone has seen a TV picture flicker/fade out when someone walks near it before because of static or body galvanization) with only your machine on. If it does the 'voodoo' again, I bet you have some problem with the mother board. But before taking the machine apart, check the connection of all your cabling used to attach all your printers, USB, monitor's , etc., into the back of the computer. Had a bent serial plug pin one time that drove me nuts... If that problem goes away when the peripherals un-attached, start adding them one by one to see if the problem returns with one of them. I you can, check your BIO's on start up.The fact it is reboot, not rebooting problem, it could be the wiring in the wall, or plugs, sockets, and such, ---plug it in to a different plug socket, with a good ground, some where else- out of the room- you are using the machine in. I just fixed my brother's house where a plug was bad, and badly installed 18 years ago, and his stove would come and go. Check for blue tooth items- in other words, eliminate all that you can, add them back in, and do the one by one test. If all else fails, take the computer to a pre-build state- in other words take it and 're-build it' all over again- One of my favorite test's to do also, is to give the wires and components the 'finger flick'...Take your middle finger, and 'flick' it on the offending device, wires, cords and all. You know the finger I am referring too...a little tap will do you at times...

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1 Votes
OH Smeg

Loose Wires at it's back where they screw in or the switch being faulty?

Both of those issues could be causing the erratic behavior of you computer.

Col

Gremlin in the machine stopped liking you???????? However more likely a bad Power Connector somewhere so have you looked at the power lead s/Power Boards involved? Could also be something that is moving when you walk past that is resting on a power switch/plug or whatever and that ripple is causing the start stop process. Don't rule out loose wires in things like Plugs/Sockets either. ;) Col
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0 Votes
Slayer_

Well I of course haven't pulled the plug from the wall. But erratic doesn't really explain why it restarts when I walked passed it. if it was a power issue, the board is set to keep the computer off in the event of an AC failure. Also, the second computer is plugged into the same outlet and is not having any issues.
But come to think of it, one day I came home and the breaker for that plug was mysteriously tripped. If it happened again (Which it hasn't) I was going to replace the breaker.

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1 Votes
JOTEK_ATLANTA

The CPU could be overheating, or Motherboard has a short, inspect the board to see if any of the capacitors are bloated, if they are the board is bad, Check the CPU fan and the temperture. If it keeps rebooting it has a virus.

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2 Votes
Awahili Guni

First of all - you did not indicate what OS System you were operating in; if it was a x86 (32 bit); for it is a known issue in some cases that Windows Update had installed WOW64 (which is for 64 bit OS. I have been in rapport with Microsoft Team and we have seen this but not until I had found out why and then bringing forth the manifestation and resolution to them. However, there is another indication of the fact; what specifically is your graphic card are you running on? I am on the latest nVidia with its own slot and I recommend folks to have their own PCI cards - each having their own memory in reserved for their own purposes. Without the sufficient information provided; I am not able to elaborate in specs to narrow down to the field of scope of what causes it might be. If your security system is working and you had ran it; I strongly recommend to download (you can uninstall it after you are done with it) Malwarebytes just to be on the safe side; for so many viruses, trojans, and worms are out there including variants and mutants can also be a trigger where it can actually disable and "hide" in your own security system (I actually have 4 - Win 7 Firewall, Extension Firewall, MSC (or aka MSE), CA Security Plus). Having experienced the same issue yet with a brand new mainboard and everything else et al. While the above poster is correct pertaining to possibilities of Wi-Fi, but if yours is disabled; then check with your DNS/IP Provider or Host Provider if you run on a Modem/WideBand/HDMI - sometimes hacks can manage to creep into those equipments and leech into those and manipulate your OS via the modems (for indeed they are a computer itself) so this is another avenue to look into if your OS is coming up clear regardless of what OS computer one is using Win, Mac, et al - even a Server ... sometimes it can be the "middle man" that is infested that is actually leeching or breech into your OS via your own DNS/IP via a hack which is why nothing may not necessarily show up or manifest anywhere in your OS from registry to what-not. So if all else comes up clear - check the modem, but I also agree with everyone - computers needs to "breathe" for even my OS has a powerful fan - in fact I have installed 4 fans not just the Master fan itself. In addition to the 'overclocking', one can actually do this configuration in the BIOS (if you know what you are doing) and put the limitations on it; for you do not want to want to end up having a "southern fried crispy motherboard" (or mainboard); in addition whatever graphic card you have, regardless it is, make sure it is up-to-date per your graphic card; and do not be tempted to leave it running on 'overclocking' all the time for it brings wear and tear on the graphic card itself, even if the manufacturer says wise and otherwise; it is not necessary. For why would one want to run their OS on overclocking on a forum? Turn it off when you are not using it or in development. Just my own humble opinion here. For those on 64 bit OS - there have been complaints on the overclocking and freezing up or locking up which in turn they have to reboot or the OS reboots itself. Whether x86 or 32 bit or 64 bit OS - if everything is cleared and good as go, and it is the overclocking, then I would strongly recommend that you are pushing it too far; turn it down a little bit. Honestly, like with "muscle cars" of old days, the temptations of revving up the engines and pedal to the metal constantly including burning up the rubber (tires), would always end up with overheated radiators to burnt valves ... think about it for it is a fact there. One can't truly keep running at that pace all the time as tempting as it is, whether if you have 500 GB or 1 TB in your graphic card if you installed it; however this is not the case for those with OS that comes with built-in graphic card pre-installed; that's a different story ... Hope everything here sums it up as blunt as possible.... (getting off the soap box)

Gremlin in the machine stopped liking you???????? However more likely a bad Power Connector somewhere so have you looked at the power lead s/Power Boards involved? Could also be something that is moving when you walk past that is resting on a power switch/plug or whatever and that ripple is causing the start stop process. Don't rule out loose wires in things like Plugs/Sockets either. ;) Col
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0 Votes
Slayer_

Wow, long post. Saddly you missed a key part, I can walk infront of the computer to restart it, even before it finishes POST. I can run back and forth and just keep restarting it.

But the info you wanted. ITs XP Pro 32 bit, running nVidia 9600 GT, 650 Core, 900 Memory, not overclocked though I know I can safely overclock it to 725 core and 1100 memory without any heat or power issues. The card uses a PCI Express 2 16. And that's what my board provides.

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0 Votes
Slayer_

Ambient temperature according to the board is 24C. HDD1 temp is 28, HDD2 temp is 29, HDD3 temp is 28. HDD4 temp is 32. I touched the RAM, its room temperature, no heat, the air coming out the back of the machine is cool and all the fans are clear.
my CPU is currently doings its automatic overclock, I could turn that off but the CPU temp and voltages look good. It OC's itself from 2.4 to 2.5 ghz, and I can use the Asus AI boost to have it safely go to 2.7 GHZ without any power or heat issues. I could definitely try it but I don't see the connection between that and my computer restarting when I walk passed it. Also, strangely, I have never had it restart when I am actively using the machine and working it hard, such as playing games. It has only ever died when watching a movie.

Perhaps if it is still restarting itself Friday night, I will quickly hop into the BIOS and change the setting, its worth a try.

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2 Votes
techrepublic

Does your computer have frontpanel pushbuttons that are linked to the motherboard via slide-on printconnectors ?

Does your computer have any kind of infrared eye like for a remote control ?

What you need to look at is if the lines to the RESET button are connected to the proper printconnector pins, and you need to check if the reset button smoothly glides into the surrounding frame of the cabinet. If it sticks or sits cramped in, it could generate false contacts.

This reset signal being at the TTL logic level in terms of current and voltage, could also be triggered if an infrared detector eye would receive any IR light.

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1 Votes
patb071

Shut it down, unplug the power and give it a nice kick. I had a crt way back in the day and it had a loose wire or something. I would be working and then all of a sudden it would go black. I tap the side it would come on. One day i got pissed enough wacked it good and never had a problem with it again.

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0 Votes
patb071

I wasn't saying give the monitor the boot. Kick the tower. what else you have to lose. I don't know how you have the patients to keep tring to figre it out.

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0 Votes
Slayer_

Patience comes when you can't afford to replace things. But I did give the tower a minor shake while it was running POST, no issues. I of course don't want to shock the HDD's, they are ancient, my C drive is from 2003!

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1 Votes
Who Am I Really

in such a fashion that when you walk past in one the direction
that you are actually facing South

in that case yer system is acknowledging yer current direction of travel saying

"I'm going south too"

time for some new components