Hi, today I tried to play a dvd with windows mediaplayer and get the following message: "Windows Media Player cannot play this DVD because there is a problem with copy protection between your DVD drive, decoder, and video card. Try installing an updated driver for your video card. My video card driver is an nvidia, because when I first installed Windows 7 the max resolution I could get was 1200x1040, the nvidia driver gives me 1650x1040, native laptop resolution. Any ideas? Thank you.