small picture in full size mode

[fencing]

hi

for a year I was enjoying my movies and Bam! ...one day WMP, MicroDVD, even Real Player started to show small picture, approximately 1/4 of expected in the full screen mode. It is located in the left bottom corner of my black screen in fullscreen mode.
I uninstalled all my codecs, installed Nimo packages 4.3 or 5.0 as basic and as full - nothing!

Did anybody have such a problem? Please help!

[UncasMS]

reinstall your vga driver or use newer/older versions of the vga driver