Question pc shut down randomly

[nighty_]

while playing valorant, my pc shut down instantly and only powered back on when i turned off my psu and back on.
system specs = Ryzen 7 3700X (not OC), EVGA RTX 3080 (OC bios), corsair vengeance LPX 2x8GB 3200mhz, ASUS TUF GAMING B450M PLUS II, NZXT C750 80+ Gold
i dont know if these are needed but i do also have a 280mm corsair elite aio, 2 1 TB ssds

 

[sizzling]

Sounds typical of a psu fault. I don’t know anything about that psu but sounds like it’s either not up to the job or faulty.

 

[nighty_]

it just happened again, and had to do the same thing to get it back up and running