Random crashs but only on specific games

[Vi4Violet]

Hello everyone,

 

I have a problem with my pc which happened 2 months ago all of a sudden.

 

my pc randomly shutdown in some games like Tekken 8, valorant or lethal compagny.

doesn’t happen in cyberpunk, bf2042 or other intensive game.

 

benchmarks and stress tests don’t make PC crash.

 

two different crashes occuring, first one is pc shutting down/turn off completly. Second one is pc freezing and audio is still going but in loop.

 

crash and freeze don’t happen in idle.

 

temps are ok, usage are ok.

 

send my pc to a shop to get a diagnostic : they told me it was GPU driver related (false, because I had uninstalled with DDU several times and even with older driver)

 

What i tried :

fully reset my pc, installed windows 10 again —> changed nothing

installed windows 11 —> changed nothing

changed my ram —> changed nothing

the shop I sent my pc told me they changed the cpu and they still had the problem

 

so now, I don’t know what to do anymore.

 

Could you guys tell me what it can be coming from ? MOBO ? PSU ?

 

my pc specs :

asus rog strix b550-a gaming plus

corsair rm850x 80 gold plus

rx 6800 xt sapphire nitro+

Corsair 4x8go vengeance pro 3600MHz

ryzen 7 5800x

all disk are healthy

like I said temp are always below 70° and crashes can happen even with a 30% usage or 70% usage, it’s random

 

thanks in advance, you guys are my last help.. I don’t know how I will be able to fix my pc otherwise..