Youtube videos are always green on IE10

Hi!

I use internet explorer 10, win8Pro, graphics nvidea GeForce 8600M GS GPU and the videos on youtube are always green.

I've read your forum, but I didn't find an answer.

I can't disable hardware acceleration because there isn't this tab in flash player box. The lastest version is actually installed.

In GoogleChrome this problem does not happen. But I prefer IE.

Thanks