Please give information about your system specs because without those it is hard to know how to help.
Need.
Motherboard.
CPU.
GPU.
RAM.
OS.
HDD.
Information.
However if it's a Dessktop PC - I suggest you go here: Official Display Driver Uninstaller DDU Download
Download DDU.
Download the version of AMD Driver you want to install.
Disconnect from the Internet completely.
Boot into safe mode.
Run DDU and uninstall all traces of previous AMD Driver. Also run Nvia Driver uninstall if you had an Nvidia GPU Previously.
Reboot into normal mode, making sure you are still disconnected from the Internet.
Run the AMD Driver installer.
Reboot.
Then and only then reconnect to the Internet.
Good luck.
