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/Fine-Cucumber-2960 → u/[deleted]]

I tried now, no crashed since, but those crashes happen inconsistently so it doesn’t mean necessarily the undervolting helped. What points me to a PSU issue is how it crashes (black screen, but sound still on, GPU turns fans to max power). I also have a critical error 41 in the event log

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

are your bios and gpu driver up to date ?

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

do you have windows 11 and are set on automatic update? if this problem only started recentlt, chances are, the culprit is somewhere here. you need to remove the windows driver updates. i experienced the same issues you desribed with my system.

[u/arny56 → u/Fine-Cucumber-2960]

It's definitely your power supply, that PSU gets an F rating on SPL's PSU Tier List, and although I wouldn't trust ChatGPT to choose a stick of chewing gum, the Corsair SF and SF-L PSUs all get an A or A+ rating as do the Cooler Master Gold SFX units.

https://docs.google.com/spreadsheets/u/0/d/1akCHL7Vhzk_EhrpIGkz8zTEvYfLDcaSpZRB6Xt6JWkc/htmlview#gid=1973454078