I'm having an issue with my PC: It is rebooting sometimes, and I am suspecting the PSU, so I want to confirm a few things. It is a new PC and the first issues started occuring roughly one month after purchase. Also they only occur after several hours of usage. And it seemed that completely shutting down powerline to the PC, and waiting few minutes, then putting it on again, seemed to relief the issue, but that might be just coincidence?
- Does the PSU capacity decrease over lifetime of the PSU?
- Does the PSU capacity temporarily decrease as it is active for a continious time?
My PC specs: Intel i7-3770, 16GB RAM, GTX 770, SSD, HDD. I think Asus Z77 motherboard.
As you can see it is pretty high-end, but I rechecked the PSU on the invoice yesterday and to my surprise I found a 30 euro PSU, namely the HKC V-550.
My system draws 480W of power from the powerline, if on full GPU & CPU stresstest. This is a heavily modified version of their base system, which did not include such a high-end GPU as the GTX770.
Also, as far as I know, a system shutdown (without! bluescreen) can only occur, if:
- PSU shuts down
- CPU shuts down
- Motherboard shuts down?
But to me it occurs to be logical that the PC would not reboot if the CPU or Motherboard had shutdown, yet with a PSU and a safety switch it might seem logical that it could reboot.
Also about the reboot: The PC "on"-LED in the front turns off once it reboots, and in my headset (that is connected through USB) I heard some kind of clicking sound once when it turns off, and once when it turns on. Might that be enough reason to believe that it is the PSU?
Also, the temperatures of my CPU and GPU, actually of my whole PC, are perfectly fine under load. The only real test I have not been able to do yet is Memtest86, but wouldn't that lead to a bluescreen under windows anyway? Instead of a reboot.
Well I hope someone is able to help me here.