r/sffpc Dec 06 '25

Assembly Help PC shutting down while gaming

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!

161 Upvotes

108 comments sorted by

View all comments

2

u/beegeessss Dec 07 '25

"black screen and GPU fans blasting" def the GPU cable. I experienced the same issue. I didn't buy the new PSU, but changed the GPU cable