black screen while trying to play movies YouTube after a while

phantomil

Distinguished
Nov 13, 2009
4
0
18,510
Hi,
When i log into my PC i can watch movies on YouTube windows media player and so on.
But after a while of using the PC suddenly all i see is a black screen and hear the sound of the movie.
it appears on YouTube as well as on windows media player and some other sites.
though other players keep playing as before.
the problem effects both internet explorer and chrome.
if i try to re log into my PC it solves the problem for some time but it appears again.
any help will be appreciated.
Sergei