PC freezing and shutting down randomly

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Phoenix6454

Reputable
May 8, 2014
15
0
4,510
So my PC has been acting super weird lately. I ordered 2 GTX 980s off of eBay a couple weeks ago, and they worked fine until a day after I got them and they shorted out. One of the cards was completely dead and my PC wouldn't boot as long as it was plugged in. The other worked by itself but caused my monitor, which is also new, to turn off and freeze my PC. Well I RMA'd both graphics cards and got them back today, and now the problem is even worse. My PC keeps freezing, making the device connected/disconnected sound, and taking upwards of a few minutes to perform a task as simple as a restart. I really need help as I'd prefer not to shell out a couple thousand rebuilding my PC. Any help much appreciated.

I should also add, my PC turns itself on in the middle of the night sometimes. Not sure if that's useful information but I've never figured out why it does that. My temps are also fine never going above 80C on the cards and 75C on the CPU.
 
Solution
D_Know_WD
Hi there Phoenix6454,

Have you tried to reset CMOS? It may be a good idea to do so.
Unfortunately, this shortage could have damaged other components as well.

There could be something wrong with your PSU as well. The easiest way to see if this is the case is to borrow one from somebody and try it on your system.
Try to run the system with the minimum components.(just a single RAM stick, take out your GPU in case you have integrated one, etc.)

Cheers,
D_Know_WD :)
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D_Know_WD

D_Know_WD

Judicious
Jul 30, 2014
6,633
3
35,960
Hi there Phoenix6454,

Have you tried to reset CMOS? It may be a good idea to do so.
Unfortunately, this shortage could have damaged other components as well.

There could be something wrong with your PSU as well. The easiest way to see if this is the case is to borrow one from somebody and try it on your system.
Try to run the system with the minimum components.(just a single RAM stick, take out your GPU in case you have integrated one, etc.)

Cheers,
D_Know_WD :)
 
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Solution
J

jdlech

Honorable
May 31, 2016
168
1
10,715
Not knowing what kind of case and PSU you have, I can't say for sure. But it might be a grounding problem. This would be highly unusual, since most motherboards are well grounded through most mounting screws and the PSU connections. But it would explain all your symptoms.
If it's not already, and if you can, try plugging your monitor into the PSU or at least into the same power plug. Also consider replacing any power strip you might be using. Finally, check the mounting screws on your motherboard and PSU and the metallic structure of your case for signs of corrosion.
 
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