Question RTX 3080 Black screen (can't find solution or similar problem)

Devil304

Prominent
Mar 31, 2021
10
0
510
I have Gigabyte RTX 3080 Gaming OC LHR, 750 W good PSU, Ryzen 9 5900x, and two displays
I have set maximum power in the Nvidia control panel.
But my PC can crash to a black screen then recover but only one display is working after that and explorer/task bar is bugged, many programs stop working.
There's nothing in windows reliability tracker.
It's happening when graphic is in stock OC settings (also when it's overcloked manually, no difference)
I don't know what to do