Hi, I just loaded Forceware 169.9 Beta from Nvidia on to my new system. After the software loaded, it called for a re-start. When the computer came back up, I have no video signal. System is a dell Precision 690 running XP Pro X64. I cant get it to start in VGA mode, use last known working config, or even get a dell icon on the screen. It shows no video at all. I've tried F8 on post, but no luck. System has 2) Nvidia Quadro FX 4500 cards, and neither of them will output to the monitor. System was working fine before driver swap. Any ideas on how to get in to the computer and roll back the driver?