You don't happen to be using the 13.11 beta drivers for your 7970 do you ?
They are doing that to a lot of 7xxx series owners, me included, a lot of us have gone back to 13.10 beta 2
Might need to run DDU from G3D forums to get rid of the old traces if you are using 13.11 betas before installing 13.10
MOBO - Crosshair V Formula
CPU - AMD FX-8350 @ 4.8GHz
COOLER - Corsair H100i / MX-4
RAM - 12GB G.Skill RIPJAWS X @ 2133MHz
GPU - XFX R9 295X2 8GB
HDD - 2TB Seagate
PSU - Corsair TX950W
CASE - Coolermaster HAF 922
OS - Windows 8.1 Pro 64bit