HI, IF ANY 1 CAN HELP I WOULD BE REAL HAPPY.

WHEN PLAYING ANY DVD/ MOVIE VIA COMPUTER THROUGH WHATEVER DEVICE BE IT NERO/ WINDOWS MEDIA PLAYER...THE COLOUR ON SCREEN APPEARS TO BE ALOT REVERSED, HARD TO SEE AT ALL AND VERY DARK.
I USE MY LG DLP TV AS MY MONITOR AND HAVE A DIGITAL CABEL CONECTION TO IT.
NO OTHER MONITOR HERE, BUT IF I CONNECT TO ANOTHER IT DOESN'T HAVE AN ISSUE??
SO I'M GUESSING ITS THE SET UP ON THE MEDIA CARD- (NVIDA) OR THE CABLE?
IT MAY BE SOMETHING SIMPLE OR NOT BUT NOTHING ASKED...
THANKS.
CAFFINE