Might be a bad riser.
or the riser is loose
or .. are the lanes set to gen2? is there a 16x configuration setup like 8x4x4x?
definetly dont leave any of those settings on auto
or the drivers are getting mixed up, might want to try DDU uninstall and reinstall drivers if nothing else works
The lanes are set to gen2 yeah . I have gen 1 and gen 2 should i switch to gen1 ? Can you tell me more about this settings ? To be honest everything is stock and auto. It`s strange that everything works well for 30 mins sometimes 1 hour sometimes 2 hours than boom...i get that error and pc freezes ! Thank you for the helping response