Computer doest boot

Intel / D975xbx2
September 11, 2009 at 20:37:22
Specs: Microsoft Windows Vista x64, Intel Q6600 / 6GB DDR2
I've got a doozy of a problem and quite frankly, I'm stumped. Here's the back
story. The other night I was using my computer and everything was running
normally. There was no indication of any problem what so ever. I shut it down and
it turned off fine, just like normal. The next morning I went to turn it on and it
refused to boot. The lights and fans come on but it doesn't POST. My monitors
don't get any signal and the activity light flickers only briefly before the whole
system just sits there. The DVD/CD drive light flickers, but the floppy drive doesn't
light up briefly like it usually does.

I've already checked the painfully obvious things. All the power supply
connections are properly plugged in and the video card and RAM are all seated
properly (I took them out and reseated them). I also adjusted the CMOS jumper to
put the system into recovery mode to see if maybe my BIOS crashed. The only
change that made was instead of instantly shutting down when I press the power
button I have to hold it down for a couple of seconds.

Judging by the symptoms and what I've already eliminated, I'm thinking that it's
either the CPU or the motherboard that's having problems and has most likely
failed. The mobo has been running without a problem for over a year and the
processor was running fine since I put it in a couple of weeks ago (I just did major

I haven't had a chance yet to swap out the processor with my old one that's
known good to check that but I will tomorrow. I have a spare of every part except
motherboard so I can check with known goods for practically everything.

I would really like to have another opinion on this in case I'm missing something.
Let me know if you need any further information.

System Specs:

Motherboard: Intel D975XBX2
CPU: Intel Core 2 Quad Q6600
Video Card: ATI Radeon HD 4890 1GB
HDD: 1 x 500GB SATA, 1 x 1.5TB SATA

See More: Computer doest boot

Report •

September 11, 2009 at 21:01:00
"The only change that made was instead of instantly shutting down when I press the power button I have to hold it down for a couple of seconds".

The above statement is confusing to me. What is instantly shutting down? The fans?

No beeps?

The first place to start is with the power supply. I doubt it is the processor.

Report •

September 11, 2009 at 21:24:11
Thanks! I hooked up my old power supply again and the
activity lights lit up just like they should. No video but that's
just because my old power supply doesn't have enough
connectors for my video card.

I'll throw in another video card tomorrow to confirm but
everything looks positive. The power supply totally slipped my
mind. I had just put in a new one and when I bench tested it
with my power supply tester it came out fine, and it's a
Corsair, so I figured it was fine.

Thanks for the help!

Report •

September 12, 2009 at 06:54:29
Keep us updated.

Report •

Related Solutions

September 13, 2009 at 15:27:04
I got my system up and running again but it wasn't the power supply, actually. I put in another video card with my old power supply and the problem was still there. I ended up unhooking everything and was trying it with a single stick of RAM, the CPU and my video card and it booted fine.

Here's the weird part. It ended up being my floppy disc drive. When I was looking around in there I noticed one of the pins on the power connector was bent and it was unplugged. Must have popped out and shorted something. Don't really need it so I just took it out, working fine now.

Thanks for your help though. It's always nice to have a fresh perspective.

Report •

Ask Question