No full screen on U tube

[fungeorge10]

Hello,
I can no longer gain full screen on things like U-Tube. My screen stays black when I try to do this

 

[me 1]

Download the latest Flash player version if you don't have it already.

Right click the video you are viewing and at the flash player settings disable Hardware acceleration setting.

Also what codec pack are U using ? Try Klite.