In safe mode change the screen setting to 800x600 and 60 Hz. Ok your way out and then Start, reboot and hope it's the usual. If there is some KVM we get to remove that.
Here's the problem, I've got a XP Pro (sp3) being used as a file server. After a reboot, the screen went black after the XP splash screen, and now it does it every time. The machine is still available to the users over the LAN.
Booting in safe mode or safe mode VGA displays properly.
Also, when booting from a Linux CD, the old screen resolution works fine.
Thanks for your help,