1) Empty your Download folder
2) Scan machine with antivirus (the one that came with Windows if you don't have others)
3) type cmd to Windows search, right click Command Prompt, run as administrator
type chkdsk /F and let it run
type sfc /scannow and let it run (fixed a typo)
exit command prompt
4) type Disk to Windows search, click Disk Cleanup -> Ok -> Clean up system files -> select all files in the list and let it run
5) Download driver uninstaller https://www.amd.com/en/support/kb/faq/gpu-601 and run it
6) Download driver from https://www.amd.com/en/support and let it download all the way before clicking anything. Once fully downloaded, install driver.
7) Reboot