Question PC restarts when playing games

[chinmayghosalkar]

Hello,
Since a few weeks i have been having an issue where when i play a heavy game (i only played destiny 2), my PC crashes and restarts on its own. At first, it happened once every 2 or 3 hours, but now it happens within 10 to 15 seconds of starting the game. I sometimes get blue screen before the PC restarted (critical process died) but that happens rarely.
Since this issue surfaced, i have tried the following,

1. clean windows install
2. new nvme
3. fresh windows on a different hard drive
4. disconnect other drives to see if any one of them is causing an issue
5. test on furmark and 3d mark (retsarting within 10s of launching)
6. tried to run cpu benchmark (runs fine without issues)
7. monitored temps and voltages using HWinfo but no signs of overheating

Now, before this issue started happening, i had installed a new ram. A 16gb 3600mhz single stick. and i installed it with my other stick which is 8gb 3200mhz (i know its wrong). after installation, i started getting these restarts within a few days and then i removed the new stick. the issue still perisited.
one thing that i noticed is that the pc doesnt restart for about 1-2 hours after it was shut down for a long time (overnight) once the first restart happens, it just wont let me play anything.

i havent tested my GPU, PSU or the RAM in anyother PC, nor have i tested different ones on my PC.

PC specs:
B450 Aorus Elite
Ryzen 5 1600 CPU
Zotac 1060 6gb dual fan GPU
Crucial Ballistix Sport LT 8GB 3200 MHz RAM
Corsair 550W PSU
Lexar NM620 256gb SSD

 

[DRagor]

What is PSU model and age? Because on first look it sounds like PSU failure. But could be also GPU failure too.

 

[chinmayghosalkar]

What is PSU model and age? Because on first look it sounds like PSU failure. But could be also GPU failure too.

Corsair VS550 age - 4 years

 

[scout_03]

reset cmos and use use occt to stress test psu with the 8 gig ram .

 

[DRagor]

Corsair VS550 age - 4 years

For this model this age is well beyond reliable performance period. I would start with testing another PSU in this case.

 

[chinmayghosalkar]

reset cmos and use use occt to stress test psu with the 8 gig ram .

just tried the occt stress test. my pc restarts as soon as i click start. it stays on for a second max.

 

[scout_03]

then try to use another psu for test seams you gone need a new one .

 

[chinmayghosalkar]

thanks for the quick help guys. will try to test it with a different PSU

 

[chinmayghosalkar]

For this model this age is well beyond reliable performance period. I would start with testing another PSU in this case.

yeah might have to buy a new one. thanks for the help!