PC auto restart when playing high-end games (No BSOD)

Hi all,

I have recently upgraded my GPU from AMD HD 7750 to NVIDIA Geforce GTX 750 Ti (with dual fans).

I tend to face issue when playing higher end games. The game starts out fine usually but then auto restart after a while. Sometimes, there is no signal to my monitor instead.

Before, I have no issue playing Witcher 2 at medium settings but started facing this problem when trying out Lords of the Fallen, even at low settings.

My idle temperature of my GPU is around 43°C while during gaming, the highest it reached is 70°C.
CPU wise, idle is around 35°C while gaming is 60°C (max).

My desktop PC is customized build with specs:
Windows 7 SP1 64-bit
Intel Core i3 CPU 530 @2.93 GHz
NVIDIA Geforce GTX 750 Ti
Motherboard: GIGABYTE H55M-S2
PSU: PowerWide ATX-430W
Ram:4GB Kingtson Ram KVR13N9S8/4 x2

Any advice? Thanks!

Boozad said:

Did you uninstall all of the AMD components and drivers before removing the HD7750 and installing the GTX750Ti?

yes I did. I used Display Driver Uninstaller from Guru3D.com to do a clean installation.

What's PowerWide? Doesn't look like trusted to me (Even though you said its powering your system since 4 years ago)

NoN said:

Could be the PSU PCI-e rail to got weak for the overall system when it is loaded in game or the vid card to overheat. But the Specs states Graphics Card Power (W): 60W for Minimum System Power Requirement 300W, and max in game should be around 66W.

I would check if the thermal paste is still fresh if you have a second hand video card and the PCI-e rail well plugged in..

I just replaced the thermal paste as well as clear out all the dust but yet the problem still persist. Connection is secured too. My previous graphic card is faulty so I doubt I can find a second hand video card to test.

RoasterMen said:

What's PowerWide? Doesn't look like trusted to me (Even though you said its powering your system since 4 years ago)

Yup! I have been using this particular PSU model for my rig since many years ago. Could the PSU be failing?

Boozad said:

Possibly. Can you check in the BIOS for the values of the 3.3V, 5V and 12V and report back with them.

I managed to get a PSU from my friend to test it out and so far I have not faced any issue! I think its my PSU that is giving me problem. Thank you for your help!