Computer Reboots. Bad PSU?

[Ayer]

So I have had this problem for a couple of months now. While playing games my computer turns off and then turns back on after a second. I thought this might be cause by too high temperatures but I upgraded my cooling system and that still didn't help. Temperatures are normal but the PC still turns off. So I think it might be the PSU's fault. What are you thought? My CPU, GPU and Motherboard are all brand new bought couple of months ago but my GPU is like 2/3 years old.

CPU : Intel i7-4790k
GPU : MSI GTX 770
PSU : Corsair 750 W
Motherboard : Gigabyte Z97P-D3

 

[DJSlofstra]

It certainly could be the psu, it is quite likely the psu, in fact. Before changing the psu however, I would firstly suggest to check if your drivers (especially gpu and chipset drivers) are up to date.

 

[Ayer]

I downloaded a program to check the voltages. These are the results: http://imgur.com/KCzZzgH
Apparently the +12V is supposed to be around 11V ?

 

[DJSlofstra]

Speccy can't reliably measure the voltages. It's always way off. Luckily, because with the voltages of your photo, the pc wouldn't even start. 😉

 

[Ayer]

I have another program called CPUID HWMonitor but that doesn't show the +12V at all. Any other programs I could check with?

 

[GhislainG]

I have another program called CPUID HWMonitor but that doesn't show the +12V at all. Any other programs I could check with?

Are they OK in the BIOS? Best is to use a DVM.

 

[Ayer]

I will check the bios

 

[GhislainG]

Does it reboot if you stress test the GPU with Furmark Burn-in test or MSI Kombuster?

 

[DJSlofstra]

I have another program called CPUID HWMonitor but that doesn't show the +12V at all. Any other programs I could check with?

I will check the bios

Yeah that would be the best guess. All the software measured voltages are generally inaccurate. It depends on the motherboard, but generally it is inaccurate.

 

[Ayer]

Does it reboot if you stress test the GPU with Furmark Burn-in test or MSI Kombuster?

No it doesn't reboot when I stress the GPU with MSI Kombuster

 

[Ayer]

I have another program called CPUID HWMonitor but that doesn't show the +12V at all. Any other programs I could check with?

I will check the bios

Yeah that would be the best guess. All the software measured voltages are generally inaccurate. It depends on the motherboard, but generally it is inaccurate.

I checked in the bios and it shows +12V as 12V so I guess it's ok