I have Sapphire R9 290 Tri-X GPU (drivers 14.4), Windows 7 Home Premium 64bit and newest Flash Player. This problem occurs in both Firefox 32 beta 6, and Internet Explorer 11. When I'm watching videos on Youtube or similar websites, I can't run GPU-Z 0.7.9 because computer immediately freezes (GPU-Z 0.7.8 works perfectly fine). Flash games or flash advertisements on sites doesn't cause freezing, only videos are causing freezing. Is this problem happening only to me ?