Just brought a HD7850, installed the latest drivers from website. However everytime i watch a video, guaranteed on youtube but also other online video, about 2-3 seconds once the video has stopped playing my display messes up. The screen is filled with horizontal lines which flicker. See an image of my screen here. In the background everything appears to be ok as if i press spacebar, the video will play again but still can't see it. This happens on both firefox v26 and IE11. Only thing i can do is power down the PC and restart it.
Looked in the Event Viewer and no errors appear and windows doesn't appear to try and recover the display.
I am able to play COD:Ghosts without issue and i haven't done any overclocking
Graphics Card: VTX3D HD7850 2GBD5-2DHX
AMD Catalyst Driver: 13.12
OS: Windows 8.1 Pro 64-bit
Processor: Intel i5 3570K 3.4Ghz (4 Cores)
RAM: 16GB DDR3 2133
PSU: 750W 80+
Motherboard: ASROCK Z77 Extreme4
HDD: 240GB SSD + 2TB HDD