DVD movie skips


I am having the following issue:

Whenever I play a DVD movie on my laptop it lightly skips every 2 seconds or so. I noticed that it happens when I turn on full screen. It will not skip when regular screen is on.

It happens with both WinMoviePlayer and WindDVD.

I copied movie into hard drive to see if that is the optical drive issue, but same thing happens.

I have a powerful laptop with 4GB of memory and fast processor.

Any ideas?

Thanks in advance!

Run dxdiag and then use VLC as player.