1. Did u buy card new or used?
- if new u can always turn it back or ssend for warranty
- if used then maybe some connection under gpu are not good
2. Did u try run card in diffirent PC and did same problems occur?
3. Did u use DDU or AMDCleanUpUtility to clean remains of drivers?
4. Is windows updated?
5. Did u try SFC and/or dism restorehealth/checkhealth to check integrity of system?
6. Did u try just use gpu on reinstalled windows?