Do not use the automatic driver installer because sometimes it errs. Instead, go here:
Proper Place to get your AMD drivers
And download the proper drivers and install them from a directory on your local system. Always do it *manually.*
Also, until you have the proper drivers installed, do not overclock *anything.* It's after you get your build up and functioning properly that you experiment with OC'ing!
Sounds like this should fix you up!