wired problem with yotube

Hi, was just wondering if someone in the community could help me out with a problem that is annoying the shit out of me. Everytime i launch YOUTUBE all the videos and windows are blank, sometimes it works fine sometimes it dont work at all, anyone elce had this/got this or can fix it?

specs are:
cpu- i5 3570k
RAM-16g
Gpu-ATI 5870HD



dont know if img worked so direct link http://postimage.org/image/sokksi2vf/ xd