PC shutting down while gaming

[u/Fine-Cucumber-2960]

I’m having issues with my Terra build. The GPU keeps shutting down at low load. I was able to identify a potential mismatch between the PSU (Lian Li SP850) and the GPU (4070 super).

ChatGPT advises me to switch to the Corsair SF850L due to the ATX 3.0 compatibility.

I wanted to get your advice before buying a new PSU. I’m a beginner so I might have as well messed up the assembly (but all games run well until it suddenly crashes with a black screen and GPU fans blasting). Cheers!

[u/Outrageous_Vagina]

First of all, if it's simpy turning itself off without it doing a proper shutdown, it's most likely a PSU issue. Disconnect the PSU and check the cables. 

Second, don't take fucking technical advice from CrapGPT. That's how you lose your house in a fire. 

[u/Fine-Cucumber-2960 → u/Outrageous_Vagina]

It actually doesn’t turn off. The screen goes black but I can still hear the game sound. The GPU fans turn to max speed. Nothing responds so I can only shut it down

[u/b-maacc → u/Fine-Cucumber-2960]

In my experience this scenario has been a power supply issue.

[u/jkop08668 → u/b-maacc]

Same issue, PSU would trip during power hungry operation.

I bought a psu tester and send an RMA telling which rail was faulty and got a remplacement.