Dead motherboard?

Krum

Distinguished
Dec 15, 2001
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As punishment for playing MVP Baseball when I should've been working, I think my motherboard has died. Mid-swing, my computer freezes with a constant sound loop. This has happened before, and I usually hit reset and everything's fine again. This time even reset didn't work. I had to unplug to get it to shut off.

When I plugged it back in and hit the power button, the fans come on and the CD-roms spin, but there's no POST beeps. Nothing comes up on the monitor. The reset and power buttons do nothing. I have to unplug to get it to shut off.

I've got a gigabyte GA-7VTXH mobo and a PNY Geforce3 Ti200 card. I took out all my extra cards, unplugged all the IDE cables, reseated my memory and graphics card. Still no better. I have a PCI graphics card in addition to my AGP one, so I tried taking out the AGP and leaving in the PCI, but that didn't do anything. I don't have any extra AGP to test, but based on the fact that it won't shut down without unplugging, it seems like the motherboard is the most likely problem. Then again, the fact that it crashed during a graphically intense game might suggest a graphics card problem. I also took out the motherboard battery because I read that should reset the BIOS, but that didn't seem to have any effect.

I also thought I smelled something around the time it happened, but I can't be sure. It may have just been the smell of despair.

Does anyone have any suggestions for me? Any troubleshooting advice that might help? If only someone had told me the Cubs Curse affects computers too, I could've avoided this whole mess.

Mark
 
I think you got it. The back of the power supply definitely smells strange. I forgot to mention that the fan on the graphics card was wavering -- starting out fast, slowing down, and then speeding up again. Seems that could be a sign the power supply's no good.

I thought it was heftier, but it's only a 300W. I had CD-rom, DVD-rom, 2 hard drives, 2 fans, and 4 PCI cards. Probably more than a 300W can handle.

I'm going to try the supply from my old PC to see if that works.

Thanks,
Mark
 
OK, the extra power supply turned out to be older than I thought -- only 110W. I just got a new 420W Enlight, since even if that isn't the problem, it can't hurt to upgrade.

Still no go. Since I've got the two different video cards, and neither works, I think I can eliminate those. So now it's got to be the mobo, memory, or processor, right? Seems mobo is the most likely, so maybe I should just bite the bullet and replace that?

Mark
 
I'd go for CPU or motherboard, but since you arnt getting any beeps I'd say your motherboard is screwed. You tried clear your CMOS? Prob wont do anything but it cant hurt to try.

P4 2.6@3.38
512Mb PC4000
2x120Gb 7200.7 in RAID0
Waterchill KT12-L30
Abit AI7
Ge-Force4 Ti4200
 
How would I go about clearing CMOS? Would taking the battery out for a half hour do it, because I tried that.

Mark
 
The battery should be in when you short the jumpers to clear the CMOS. You need voltage to short them. This may do the trick.

"I am become death, the destroyer of worlds. Now, let's eat!