I custom-built my PC about three months ago and haven’t had any issues until recently. Now, my GPU (Yeston Radeon 6750GRE 10G) turns on and works initially, but it stops working when I reach the sign-in screen. I’ve tried various troubleshooting steps, including going into safe mode and cleaning files. However, when I install the AMD drivers, the screen flickers, and the GPU turns off during installation. I even replaced it with a 3060, but the new GPU has the same issue. Any help would be greatly appreciated.