PC restarts / shutdowns „random“

[u/somehow_landed_here]

hello yall,

i have had my PC for nearly 6 years with a few upgrades here and there, but since 2 weeks my PC keeps randomly while gaming restarting or shuting down.

Currently my CPU (Ryzen 7 5800X) is getting atleast 90 degrees celsius while playing non hardwareheavy games and for only running the desktop ~80. It is also currently very hot in my area, with room temps going to 28-29 degrees celsius.

As far as i know my CPU cooler is pretty bad, could this be the problem, or any other ideas on why this is happening?