use this to uninstall any video card drivers
AMD or NV , it works better then some of the paid version at it's level and i would uninstall them in safe mode .
http://www.wagnardmobile.com/forums/viewtopic.php?f=5&t=700direct download link from AMD's site for the Catalyst (Crimson) 15.12
http://support.amd.com/en-us/download/desktop/previous/detail?os=Windows%2010%20-%2064&rev=15.12Like eckmar say use the newest drivers and I 'll take it another step that's bad advice claymore gives on what drivers to use because some cards are not supported by the Catalyst (Crimson) 15.12 and those drivers can be the main problem in some cases and tomorrow if what I read is right there is a new drivers releases coming form AMD that will be awesome . but well see tomorrow .
And drivers do matter in how they run the cards they power and the software those cards run .
Does this Catalyst (Crimson) 15.12 driver work with RX 480?
No, they were released AFTER the 15.12 drivers were.
I recommend the 16.9.2 WQHL driver for the RX 4xx series cards, it also works reasonable well with most older AMD cards (though there's a couple "holes" in it's support for older cards, noteably the Tahiti based cards like the R9 280x).
Ignore the "blockchain" drivers if you are on Windows 7 - they flat out DON'T WORK on older cards in my limited testing of them.
Seems like AMD ONLY tested them on Windows 10 for some STUPID reason.