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Solve : Ongoing hardware issues (could be anything at this point)?

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Alright to give a little backstory... my PC has given me nothing but trouble lately. I bought a new internal hard DRIVE and installed it. It was DOA and I never got it working, no big deal as I returned it. Since then my PC has been shutting off on its own after about 30-60 minutes. I figured out it was overheating so I ordered some paste to reseat it and get it going on normal temperatures again. I get it all set and now that everything is all squared away I went to hit the power button and it turns on, short beeps once, and then immediately shuts off... like this all happens within 1 second. I've taken everything out except motherboard, CPU/heatsink, one stick of RAM and my video card with the same results. I don't have any spare parts around so I don't want to go buy something to replace whatever the problem it just for it to not work again. Any help would be much appreciated!

I have a gigabyte ga-p35-ds3l motherboard if that helps.Try replacing the CMOS battery with a fresh new one and make sure everything is firmly seated upon removing or swapping.Sounds like the CPU isn't fully seated....double check it.Quote from: PATIO on February 16, 2011, 08:28:21 PM

Sounds like the CPU isn't fully seated....double check it.

The weird thing is that when the 4 slot power supply to the motherboard is taken out, it starts up fine (by that I mean the FAN spins... nothing else though). I've already re-seated the CPU/heatsink twice now so I'm pretty sure it isn't that. How do I take the battery out of the shell? It's pretty stuck in there. Thanks guys.

Edit - I got the battery out. You think it's dead or should I try putting it back in.Quote
I got the battery out. You think it's dead or should I try putting it back in
From the symptoms it is making you should atleast replace it. I had repaired one PC making this kind of issue and turns out its just the battery but of course in your case, hopefully it will work. Weak CMOS battery can cause a lot of different booting problem.And this PSU worked in this machine prior to this ? ?Yes everything worked fine, the CPU was just overheating and it would power down because of it.Big UPDATE. I'm still new so I couldn't figure out how to edit the OP, but here's what I've tried. I replaced the CPU, heatsink, CMOS battery, PSU (all known to be working) and reset the CMOS and I'm still getting the same problem. Does this mean I need a whole new motherboard? This whole thing has been a disaster! Thank you to any further replies.Time for a benchtest to determine if its the MBoard...
Remove the MBoard and PSU from the case...the board can sit on wood or cardboard...i use a rubber mat but not beccessary...

Hook up only the following:
PSU
Keyboard
Mouse
1 stik of RAM
Monitor...

SEE if it Posts properly and stays running...
If so add 1 component at a time powering down fully til you find the culprit.Quote from: patio on February 28, 2011, 06:34:08 PM
Time for a benchtest to determine if its the MBoard...
Remove the MBoard and PSU from the case...the board can sit on wood or cardboard...i use a rubber mat but not beccessary...

Hook up only the following:
PSU
Keyboard
Mouse
1 stik of RAM
Monitor...

See if it Posts properly and stays running...
If so add 1 component at a time powering down fully til you find the culprit.

This is what's been hooked up the past couple weeks. With PSU, video card and RAM hooked up it turns on and off within 1 second.But it's still in the case...
Have you tried a different/newer PSU yet ? ?Quote from: patio on February 28, 2011, 07:37:50 PM
But it's still in the case...
Have you tried a different/newer PSU yet ? ?

It's sitting on a cardboard box next to the case. I have tried a new CPU/Heatsink, a new CMOS battery, I've reset the CMOS and tried a new PSU.Quote
The weird thing is that when the 4 slot power supply to the motherboard is taken out, it starts up fine

I dont quite get you here... Quote from: jason2074 on March 01, 2011, 01:58:40 AM

I dont quite get you here...

Sorry, I didn't understand the issue at that point. When the 4 pin connector is not plugged into the motherboard, the computer starts up but doesn't post whatsoever. So the fan on the heatsink spins but nothing else is going on. The only items that haven't been replaced with known working substitutes are the motherboard, video card, and RAM.Hmmm...
Try it with only 1 stik of RAM...

In the meantime you can DLoad MemTest to test your RAM's condition...
Any errors at all and you have a bad stik...


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