The driver sweeper website is not working
There you’ll find uninstall. Click uninstall and follow the prompt.
Now go to:
| under search type in Programs and Features look for nVidia Drivers and uninstall it if you find any.
Then Download Driver Sweeper
the instructions in how to run it is on their website.
Clear the Temp folders. Once you do that reboot your System. Once it’s rebooted then go ahead and install the Drivers from the Download on desktop.
For the ATI card its the same procedure. Driver Sweeper should work for ATI Display card as well.