I have an AMD Radeon 6700xt GPU. The drivers randomly stop working and disconnect at seemingly always random intervals. This has been happening for a few months straight just randomly. The only thing that seems to be potentially causing it is every time it happens I think I have alt + tabbed but it doesn't happen every time I alt + tab so I have no clue what is causing it to happen. It's not an everyday thing it's purely random. The computer will just randomly freeze for probably like 30 seconds then my two monitors will disconnect and there's nothing I can do until I restart. Once I restart, the device, in device manager, is disabled saying "This device is disabled. (Code 22)" and then once I re-enable it in device manager the error code changes to "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)" . From there I have to restart the device another time and it will for some reason be working properly until it just randomly breaks again. Not sure how I can once and for all resolve this so I don't have to deal with this for basically the rest of my brand new PC's lifetime.
I'm getting much the same issue - running a Sapphire Pulse 6700XT - did you get anywhere with this?
Games are frequently giving driver crash errors, but occasionally I get a full display lock up and black screen which requires me to hit the power button to force a shutdown.
After powering back on I'm often getting either an extremely low res 640x480 looking desktop, or the card not being fully detected as you've described - both needing a reboot or 2 to get back to a 'functional' card.
Unplugged and reseated power to both motherboard and graphics card
Removed the XMP memory overclock profile
Removed 2 of my 4 sticks of RAM
Tried different output on the card
I've done extended runs of the Heaven and Furmark stress tests and been unable to induce a crash, but a maximum of an hour playing Halo Master Chief Collection and it will crash one way or another.
Really frustrating as my 1080ti died on me necessitating this purchase, and it appears I might have a dud
Hope you have had some joy since your post and can assist with a fix
4 x Crucial Ballistix 8GB 3600 DDR4 memory
MSI MAG X570 Tomahawk Wifi, 7C84v19 BIOS Motherboard
Sapphire Pulse RX 6700XT
Phanteks Revolt Pro 850W PSU