Black scrin bugg in wow!

[CIDER]

Hello.

I get one bug at Nefarian and in searing gorge my scrin get black and i can not do anything...Need to rebot..one friend of my told me it was a radeon bugg and he did not know how to fix it...

Thanks for reading my post

CiDeR :cool:

(I know my english is bad so please ddont write LoL bad english)