After updating my card (R9 270) with the latest driver on your site, (operating system: Windows 7 64 bit) some of my games (hearthstone, overwatch) simply stopped playing. Hearthstone had the "pink screen of death" while overwatch refused to launch, saying "no supported graphics card was found." When I restarted my computer, it said "graphics card not compatible, please update your drivers."
I have since tried re-installing the driver, re-installing it using a clean install, trying to install an older version of the driver, trying to do a system restore (it said "system restore failed), trying to do a system restore in safe mode, trying to do a system restore with antivirus turned off, and trying to "roll back" the driver to a previous version.
None of this has worked or made any difference. I'm not sure what to do other than get a new PC (i'm very pessimistic when it comes to finding solutions to these types of problems.) Anyway, if you have any suggestions, they'd be very much appreciated.