My recently built computer is having problems staying running, it is able to run normally for 20 minutes.

Millionshlong

Reputable
Feb 22, 2015
23
0
4,520
When it is left running it will shutdown and start itself up again an hour later. Temperatures have been checked and are all at a normal level. Was thinking PSU but its new.
 

Looby219

Honorable
Nov 26, 2013
125
0
10,710
Boot into safe mode to see if it is a hardware or software problem. Check to make sure all fans are running. There could be a broken fan causing overheating. Ensure no connections are loose in the system. If it is a hardware problem and these measures did not help, a faulty motherboard could be responsible.