I had been using my XFX GeForce 8600 GT for over a year and a half without any problem. Suddenly, I started experiencing display problems. When I ran my computer one fine day, my monitor was completely blank although my system was running perfectly fine and Windows was loading perfectly. I did not experience any "No Display" error message on my monitor, only it was completely blank and the LED on the monitor was constantly blinking. I had used my computer only a few hours ago and everything ran perfectly fine including the Graphics Card. The only thing i had done before shutting down was used the Disk Cleanup tool and compressed some old files on both my drives via that. It was only after this shutdown that i started experiencing the blank screen problems. I have tried re-installing the Graphics Card and the drivers but of no avail and I'm currently running my system on the on board graphics facility. Any help would be appreciated.