Philips LCD Flat Panel Monitor display has a Red Tint

I have a Philips 20″ flat panel tv/monitor. I used a DVI to VGA adapter to hook it to my PC but the display tint is Red. I know that it is an issue with either the connection or my PC because when I switch it to TV mode, the picture is fine. Do you have any suggestions as to how I can fix this problem? Thanks.