Big Problem with Videos

[Thomas]

Suddently all my videos are atomatically zoomed ...
I cannot zoom back
What shall i do ?

The Problem is with all Videos (DVD, wma, avi, mpg,
rm, ...)

 

[Steve]

I just thought I'd add my problem to this one... it sounds
similar, and it may be from the same base. Recently had a
virus attack and, although my system appears to be clear
now, all video, new and old, appears to only play the top
right quadrant of the film. Any Ideas as to why this could
happen?