PC shuts down when playing games

Hello for few days my PC just shuts down itself when playing games, at first I thought it was PSU checked cables, checked if fan works correctly and I can't see any problems with it. Then I figured out that temp on CPU is quite high( it was 58C going to 70C while playing and I'm sure that was cause) so I have bought thermal paste and applied it on CPU( now it works at around 32-40C and about 60C while playing). So I started playing PUBG again and my PC shat down again. What's your guess is working wrong because I'm off the track right now.

Submitted September 30, 2017 at 09:16PM by IDontHaveNicknameToo http://ift.tt/2x30Ohb