PC randomly shutting down

Aug 14, 2018
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Hello guys!

So I have been having this issue for a while now, and I really cannot find any solution to this. My Computer decides to shutdown when playing, mostly when playing high demanding games, but this does not happen all the time. There are times where I can play for days the whole day straight, and nothing happens. There are other days, where about ten minutes after starting the game, my computer decides to reboot.

At first I thought it could be something related to overheating, but I think it is safe to say that is not the problem. First I thought it was the CPU overheating, but I bought a new cooler for it a few months ago.
I have been monitoring the temperatures when gaming, and CPU gets around 45C°, sometimes peeking to 50C° but never more than that. GPU stay at around 55-60C°, and I am using MSI After burner to make the fans run faster.
I thought about the PSU maybe, might be some shortage on voltages, but I cannot explain why it just happens occasionally, and not every time I game.

As I said, this does not always happen, some days it decides to shut down, but then I have a week of playing with no issues, and at this point it is getting kind of frustrating because I have no clue what it could be.

Intel Core i5-4460
8GM RAM
AMD Raedon HD 7900 Series
PSU: Corsair VS550
 

R_1

Expert
Ambassador
My canned random reboot Rant
Random reboots are usually caused by the PSU, the RAM or software AND in that order of likely-hood.
PSU - If you can borrow/swap a PSU for testing. sibling/friend you can swap out the PSU and each system will be testing the other.
RAM - run the system with one stick of RAM see if stability returns if not Test all the RAM with memtest 86 for three passes or overnight. if you get no 0 errors after more than three passes the ram is good. with the random reboots I would suggest running this test after the PSU swap or after the PSU has been cleared.
Software - Drivers or other issues can cause reboots. Boot to a linux distro on a USB drive. mint linux will boot to memtest86. you can run the OS from the USB and await reboot.
end canned rant

the VS series PSU's are iffy at best I would start the search there
 
Aug 14, 2018
2
0
10
So it is most probably the PSU? I think I might be able to borrow a PSU from a friend of mine, I will test that out. But why does it only reboot occasionally, and not every time I play high demanding games? That is something that I cannot understand.