I use Fedora Linux now, with the KDE Plasma desktop environment - I was using Linux Mint when this happened initially, but I don't think the OS matters for this. My PC is in the shop - when the internal temp got to the mid-50c range (which shouldn't be an issue), the screens would turn off and my rig would become inoperable until completing a manual power cycle. I updated the BIOS and OS, of course, but narrowed the issue down to either the PSU or the GPU. I have a shop assessing it more in-depth for me, but wanted to be prepared just in case the issue is the GPU. Any advice for a budget GPU is appreciate if I end up needing a new one. Previous was an NVIDIA 4070.