Solved Computer is shutting off randomly

July 29, 2017 at 21:56:57
Specs: Windows 10
So I generally run my computer 24/7, came to my computer today and it was on a blue screen.

I tried to restart my computer and it wasnt restarting for some reason. It would just boot, go through the normal posting, then sit at a blank black screen. I can reboot it several times, and eventually it will boot to windows, but then it will just shut off randomly with zero notice, and instantly boot back up. I am not sure if this is a motherboard issue, or a power issue, or even an issue with my SSD. The SSD is brand new, and has been working fine for a few weeks, the PSU is a little over a year old, but it is a platinum certification so I don't think it could be dying out already.

If its just randomly shutting off instantly instead of getting a blue screen or something, so that makes me think it's not the SSD. I think it could be an issue with the PSU/Mobo.... The CPU temps are very cool (40c is the average temp).

I did not think of to check the GPU, but could an overheating GPU just cause the machine to instantly turn off with no warning? I figure maybe it would just slow down really badly, but not just reboot the machine.

Tomorrow I am planning on to test the PC without the GPU, and maybe with an older SSD to see if that works. I am not sure if I should try booting with single sticks of ram, considering it's booting to windows just fine with all four.

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July 29, 2017 at 22:18:58
If you have a multimeter and the system isn't a laptop, back probe the PSU connections when your PC is acting up. Values can be +/-5% from the values on this pinout, except the -12V line, which can be +/-10%:

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July 30, 2017 at 02:14:33
✔ Best Answer
Overheating of of either the GPU or CPU would indeed cause the computer to suddenly shutdown without warning. This is a safety feature to prevent either of those components from being permanently damaged by prolonged excessive heat.

I would check to see if all the fans are working, also use an air-blower to blow out any accumulated dust from the motherboard, the main components, the fans, and the air vents on the system case.

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