Well....up to about 5 minutes ago my monitor was working fine. Then i unplugged my monitor cable on the back because it was tightly wound around a few other cables. Then when i plugged it back in the picture wouldn't come up. So i restarted my computer....the picture showed up until windows finished loading but cut out again when the login screen should show up. I have a Samsung Syncmaster 19" CRT, XFX GeForce 7900 GTX and running Winodws XP Pro x64. Any ideas?