PSU Causing Random Shutdowns in Games

Cappin · Aug 9, 2016

Earlier this year my computer was shutting down randomly in such games as The Witcher 3, CS:GO, and Assassins Creed Brotherhood. I took it into a PC Repair store and was told the GPU wasn't functioning properly and one of the fans was also broken on it (it was a rather old GPU). So I purchased a new one, but as soon as I went back to playing the same games as previously listed it began to shut down or completely freeze the PC randomly again. I suspect this is a Power Supply problem as my PC is spotless on the inside but I just wanted to seek some advice first before I go and buy another PSU.

Here are my Specs:
GPU: GTX 970 NVIDIA GeForce 4095MB
CPU: AMD FX-8150 Zambezi 32nm Technology
RAM: 8GB Dual-Channel DDR3 @ 671MHz
Motherboard: Gigabyte Technology GA-990FXA-D3 (Socket M2)
Operating System: Windows 10 Home 64-bit
PSU: SilverStone Strider Gold S Series ST85F-GS 850W ATX 80 PLUS GOLD

Any help would be greatly appreciated as I just want to make sure it is the PSU before I buy a new one.

illuminatuz · Aug 9, 2016

Shutdown? Like normal shutdown or freeze and then you have to hard reboot? Or simply turn off?

Try the PSU on your friend's PC and check. If his system also shuts down, change it. Or test one by one all the components to isolate the issue.

On a different note - are the drivers updated? Did you remove the old GPU drivers completely before installing the new GPU and fresh drivers?? Are the motherboard drives updated?? Check them before spending any money.

Cappin · Aug 10, 2016

illuminatuz :

Thank you for the fast reply.

It changes, sometimes it completely turns off, and other times it freezes and I have to hard reboot it. I'm going to test my friends PSU in my computer and play the same games on the same graphics settings and see how it runs, I'll get back to you with the results.

But yes, all of my drivers are up to date and the old drivers have been removed as my old GPU used to be AMD rather than NVIDIA, so I just had to remove Catalyst and the other programs.

illuminatuz · Aug 10, 2016

Cappin :

oh, that happened to me too.. mostly I think it's the GPU at fault.. I had a 670 - had a couple of freezes and had to do a force-boot when I installed the 1070.. doesn't look like PSU is at fault IF this is happening AFTER you swapped the nVidia for the AMD..

Cappin · Aug 13, 2016

illuminatuz :

Cappin :

oh, that happened to me too.. mostly I think it's the GPU at fault.. I had a 670 - had a couple of freezes and had to do a force-boot when I installed the 1070.. doesn't look like PSU is at fault IF this is happening AFTER you swapped the nVidia for the AMD..

Oh interesting, see I swapped my AMD for an NVIDIA GPU and the same problem was occurring for both of them which is why I assumed it would be the PSU, but could it possibly be the motherboard slot for the GPU or would it be the PSU still?

illuminatuz · Aug 19, 2016

PSU - maybe.. but since your PC boots up fine and all, the possibility is higher with GPU.. try to use Guru3D's Driver Sweeper by booting into safe-mode and uninstall the AMD drivers & fresh install the nVidia drivers..

if that doesn't work, try to reinstall windows..

Cappin · Sep 18, 2016

illuminatuz :

Hey, sorry for the late reply, have been caught up with Uni work.
I tried using Guru3D's Driver Sweeper and that didn't fix the problem so I reinstalled windows 10 and now it's got to a state where whenever I try and have a few tabs on my two different screens or install the new drivers for the GPU it will freeze up completely so I have to hard reboot the computer or it will just completely shut down.

It tends to freeze up completely on the first time and then once I hard reboot the computer again it will completely shut down when I try using it until I give it a break for a while, and once I come back to it, it will start the cycle again where it will freeze completely and I have to hard reboot and then the next few times it'll completely shutdown.

Would this be the PSU or GPU causing this problem?
I cleaned out the computer again so it is not a dust problem.

illuminatuz · Oct 25, 2016

Cappin :

illuminatuz :

Hey, sorry for the late reply, have been caught up with Uni work.
I tried using Guru3D's Driver Sweeper and that didn't fix the problem so I reinstalled windows 10 and now it's got to a state where whenever I try and have a few tabs on my two different screens or install the new drivers for the GPU it will freeze up completely so I have to hard reboot the computer or it will just completely shut down.

It tends to freeze up completely on the first time and then once I hard reboot the computer again it will completely shut down when I try using it until I give it a break for a while, and once I come back to it, it will start the cycle again where it will freeze completely and I have to hard reboot and then the next few times it'll completely shutdown.

Would this be the PSU or GPU causing this problem?
I cleaned out the computer again so it is not a dust problem.

I'm now sorry as I was caught up as well. you can to use the GPU in another computer to see if the issue is with GPU or PSU, try the same with RAM also.. you will know which one the moment the other PC also starts acting up.

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