TIA for any help, I've searched the forum for a solution as I've seen others have had a similar problem. I think I've tried every solution suggested...so I thought I'd start a new thread perhaps to find my solution...so here is my saga: I upgraded from Vista64 to Windows7 64bit final (not a clean install, I know its not the preferred, however, its a problem to do a clean ) on an HP M9300T desktop. Everything worked fine, until the final restart. System will start, I get the colored thingees, I get the Welcome screen, when it should go to my desktop, I get only a black screen with the arrow in the middle. Even if I boot into safe mode, I still only get the black screen... I've tried reinstalling x4.... I can hit CRTL+ALT+DEL and get to the task manager, and I can run task, programs go on-line etc. Ran the Nvidia control applet, the monitor is set to native resolution @ 59hz. Don't know if that is causing a problem, I've changed it but it doesn't seem to stay set. Other than the DVI output I've tried VGA and HDMI outputs to several different screens from the GS 9800 video card, no change. I even browsed to the Nvidia site and installed their latest Windows 7 64bit WHQL drivers. I've disconnected everything except the keyboard, monitor and mouse, I've pulled every card out of it except the video card, no change?? HELP!