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My Computer Won't Start Up!

Posted on 2006-05-31
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Last Modified: 2010-04-25
My computer shut down all of a sudden yesterday, and I cannot get any response from it now. At first I thought it was probably the PSU, but I got a new PSU and that did not change things. So now it seems like the mobo is the likely culprit. However, my current mobo (a Gigahertz GA-8IGX running the Intel 845G chipset) has an LED that tells you when it is not safe to add or remove DIMMs. I noticed both with the old as well as the new PSUs that that LED would come on when I shitched on the power. That is the only indication of life. The PSU fan does not even spin.

I am certainly no expert in diagnosing computer failures. Am I correct is assuming that I have ruled out the PSU as being the problem? Assuming that to be the case, then would that LED on the mobo light if a dead mobo were the culprit? Is there anything else I should be checking?

Thank you.
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Question by:Arbanak
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Callandor earned 2000 total points
ID: 16799642
If you replaced the PSU and it still doesn't work, the odds are that the problem lies elsewhere.  These other things could be the problem:
- motherboard shorting on case, or dust accumulation
- bad connections
- faulty or inadequate power supply
- bad RAM, or wrong ones for your motherboard, or bad RAM slot (try in another slot)
- faulty video card
- bad motherboard
- bad cpu

Start with a minimal system to eliminate as many variables as possible.  Take the motherboard out of the case and place it on a cardboard box, install one RAM module and the video card.  If it boots up, add more components, one at a time.  If it doesn't, try another video card and other RAM.
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by:Arbanak
ID: 16800190
Well, I think I narrowed it down to the motherboard. Once again, I tried powering it up. Fans started spinning...everything looked good. That is, until a small part on the mobo caught fire! I just hope that the damage is limited to the mobo, since that part was uncomfortably close to the CPU (although definitely distinct from it).
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