Question System Freezes and Reboots

[SoEliteGamer]

CPU: Ryzen 5 3600
Motherboard: Gigabyte B450M DS3H
Video Card: ASUS GTX 1660 Super A6G Gaming
Power Supply: EVGA 500 W1
Memory: G.Skill Flare X 16GB kit (8GB installed one memory stick was faulty)

My PC would randomly crash, ran memtest, turns out a memory stick was dead, removed it and ran memtest again, no errors.

Now when I do basic stuff, like watching YouTube, my PC freezes, fans ramp up and it reboots

Windows isn't logging the crash, so it doesn't show up in the problem reports

PC was purchased this year (in May)

 

[rgd1101]

test with a different psu?

 

[SoEliteGamer]

test with a different psu?

Unfortunately, I don't have another PSU to test with