Question My computer keeps on randomly shutting down

Sep 17, 2020
my parts:
ryzen 5 3600 with stock fan on it
rtx 2060
asrock b550 pro4
corsair vengeance rgb pro 2x8 3600mhz
corsair tx650m 80+ gold
sn550 wd blue 500gb m.2 ssd
2tb seagate barracuda
be quiet pure base 500dx

I built this around 2 weeks ago and i been having problems with it randomly resetting
i use it for gaming
I have tried only using one stick of ram and testing both but it still happens and i have tried ccleaner, malwarebytes and i have used driver easy to make sure all of my drivers are up to date, i have run ryzen master and the max it reaches when i was doing a cinebench test was 80 degrees celcius and under load my gpu maxes out at around 65. Please could someone tell me what to do.