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Building My First computer

By ddaniels10037 ·
Hello fellow Technicians, I am building my first computer and I am using an PCCHIP M787CL+ series motherboard it has a CPU onboard but I can not get it to power up I tried changing the CMOS from Normal to clear and I also tried running a screwdriveron the front panel pins but, I still get no power the fan doesn't even come on. Can someone please guide me in the right direction.

Respectfuly Yours

Derrick Daniels

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Building My First computer

by tduval In reply to Building My First compute ...

First of all, verify good strap to start MB twice (often badly written), and use your screwdriver to test. After, test all straps with screwdriver.

You need some extra parts to test all :
- change power supply first
- change processor then

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Building My First computer

by ddaniels10037 In reply to Building My First compute ...

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Building My First computer

by donmars In reply to Building My First compute ...

What's with the screw driver? Are you shorting pins to see if you have a bad switch? What are you, a refridgerator mechanic? He He He (please have a sense of humor) Firstly get yourself a cheap DVM and a few jumpers so you can probe for voltages. Start from the begining and verify that you have AC voltage at the wall plug. Verify that you have AC voltage at the end of the line cord that plugs into the box (computer). If you have power there and still no fan, you do mean the power supply fan I assume, then you probably have a bad P/S (power supply) or the fuse inside the P/S is blown. Some P/S do not have a fuse, but if you are up to it you can open it up and check. If this is a new P/S the returning it under warranty is the best way to go.What brand and model P/S is it? Is there a voltage selector switch on back of the P/S? Is it in the correct position? Do a visual on the power supply, of course make sure all wires and cables are secure, smell the power supply for burn odor. get back to us with results.

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Building My First computer

by ddaniels10037 In reply to Building My First compute ...

NO no (smile). Someone from computergeeks told me to try the scraping the pins with a screwdriver I thought it was sought of weird myself but at this poin. I will try anything. But But I have tried three different powersupplies two being new the other old. But what are the chances of all three powersupplies not working. Not to sound to ignorate but when you say DVM. Are you talking about the Standard ST-310 miltimeter because I have one of them. I am using a Compaq 400 watt P4 ready. Thank You for everything.

Derrick

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Building My First computer

by pctech In reply to Building My First compute ...

Double check the motherboard jumpers, power cables - pay special attention to the power cable on the floppy drive. One pin off will put you straight to ground, and make sure that the motherboard is not grounded out to the case by a motherboard mountplaced in the wrong place - no hole for mounting on the motherboard. - I am guessing you are talking about the CPU fan. Since this is your first build, read and understand the installation instructions that came with the motherboard. Try to understand what the CMOS settings are and what they mean. Different motherbaord manufacturers have differnet names for the same thing in CMOS. Most are the listed the same across manuals, but not all. Ensure the power supply is disconnected when making any hardware changes/moves on the motherboard. Ensure that you are well grounded before touching any of the components. Start with the motherboard, CPU, ram, and video installed to begin with. Should all be successful, install one device at a time, starting with the floppy drive and adding hard drives, and other drives, one at a time, after each successful POST. PC 100, or PC Chips boards usualy have most expansion devices onboard, but install each above board expansion card one at a time, just as with the drives. This way, if the system will not POST, you can usually start trouble shooting with the last device installed. When all the hardware goes well, start loading the OS, install drivers and externals. Enjoy the satisfaction of building yourfirst system!

I hope this helps

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Building My First computer

by ddaniels10037 In reply to Building My First compute ...

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Building My First computer

by donmars In reply to Building My First compute ...

OK now you know there is a problem with the mother board or the P/S cables from the P/S. Again a DVM would be helpful. Unplug everything from the mother board- drives (floppy, CD-ROM and hard drive), memory, video, modem- everything but the P/S. Make sure that is plugged into the board firmly and in the correct orientation then power up. If you get power (fan spins maybe lights up front, you will get beep errors) turn unit off and add memory. Power up again see if power remains. If so add something else, and so on. The point at which it fails then the last item installed is the defective part. Of course if it fails with the very first power up (bare motherboard)then you have a bad motherboard. Check cpu seated properly and power cables to Mother Board is correctly plugged in. This should not be a hard problem to isolate. You are halfway there by swapping out power supplies and confirming that is not the problem.

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Building My First computer

by ddaniels10037 In reply to Building My First compute ...

Thank You donmars I am going to try this right away and I will let you know the outcome

respectfuly Yours

Derrick

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Building My First computer

by ddaniels10037 In reply to Building My First compute ...

Donmars I am trying to award you my points but as you know I am new to this. So if you can just e-mail me with some directions on how. I will do so.

Respectfuly Yours

Derrick

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