Check the plug and connection to the video card. Make sure the connector is firmly seated. If you still have the yellow color cast, try wiggling the video cable an inch or two from the connector. Video cables are easily damaged where they meet the connector. If the color cast goes away when you move the cable your cable is damaged. >I run a P200, 32 meg RAM Hornet brand pc with Win98SE o/s and the new monitor >is very yellow. I have tried every way I can think of to adjust the colours. I >even read the Help files and trouble shooters, but no solution in sight. Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com