Reseat the video card and try it without the screw installed. Sometimes the bracket is misaligned and the card is unseated when the screw is tightened. If this works, remove the card and bend the bracket so the screw fits without unseating the card. If this doesn`t work, check the ram. Orrin Bendfelt The NOSPIN Group provides a monthly newsletter with great tips, information and ideas: NOSPIN-L, The NOSPIN Magazine Visit our web site to signup: http://freepctech.com