Computer randomly restarts and continues crashing and restarting until shut down?

Supercritical

Reputable
Jul 30, 2015
22
0
4,510
So this started as early as around >1 week ago and had seemingly resolved itself until it once again struck today. First, allow me to describe the process in which it crashes in:

1. I run the computer for around 30-60 minutes (first thing in the morning) doing anything from light browsing to some casual gaming.
2. The computer crashes and restarts bringing me to the login screen.
3. After >5 seconds the computer restarts again and keeps repeating Step 3 until I'm able to shut it down.

After this I let the computer rest for a while and it "cools down" and can run anywhere from up to 10-60 minutes (depending on rest time?) before the crashing begins. Seemingly a day after (last week) the computer works fine?

Some Relevant Information

My computer is around 2 years old, it was hit by a power surge about a year ago (I had to replace the SSD) and after monitoring the component temps with HWMonitor everything appears normal. I also changed the thermal paste after the crashing began last week.

Could it be possible it's caused by the humidity/temperature or the power supply?
 

Supercritical

Reputable
Jul 30, 2015
22
0
4,510



Sorry about that, here's my build:

Motherboard: ASRock z77 Extreme 4
Video Card: Asus Nvidia Geforce GTX 660
CPU: Intel i5 3570k
PSU: Rosewill Fortress Platinum Certified 650w
Memory: Corsair XMS3 (8gb x 2)
SSD: Samsung 840 Evo