I've been struggling with my computer booting to a black screen for a while now.
I have a temporary fix wich is boot windows 8 in safe mode uninstall the GPU driver, reboot and then re-install
the drivers (works only with Catalyst 14.12, as Catalyst 15.5 crashes during install and causes a black screen).
Once I do this, if I reboot when the driver install prompts me to, generally the computer works until I turn it off,
which it fails to do and just hangs on a black screen with the fans still spinning. When I turn it on it boots to
a black screen again and I have to repeat the whole process.
I tried this using both the R9 280 and the HD 7950 firmware on my card and it makes no difference.
Does anyone of you guys know of a more permanent solution other than reinstalling windows or buying a new card?