Computer randomly reboots when playing games

Blue1313

Commendable
Sep 26, 2016
2
0
1,510
Since a few months back my computer randomly have been rebooting while playing games, especially high performing ones. In the beginning it happened rarely but it got successively more frequent and now it's barely possible to play any kind of game at all without a reboot a few seconds to minutes in. Two times this week it restarted when only having my computer on as well, not playing anything. I get no error messages or a blue screen. My computer is only about three years and I bought it complete, it's not homebuilt. I've made sure everything is plugged in, no dust and I even reinstalled my computer and windows entirely. Any ideas what may be causing this and how to solve it?

Processor: Intel Core i3 3,5GHz
Graphics card: GeForce GTX 960
Windows 8
8GB RAM
500W Cooler Master
 

Blue1313

Commendable
Sep 26, 2016
2
0
1,510


I suspected the PSU being faulty but tried replacing it with another functioning today, everything works again!