Video Output Failure?

Hi I’m experancing a problem with one of my servers.

Problem:
1. Video output is only a gray screen and the cursor, (which responds to mouse movements.)
2. Remote Desktop is now failing to connect.

Resultantly, I cannot administer the server.

Attempted Resolution to Date:
1. I have switched out the monitors.
2. I have also restarted the server.

Both of these failed to resolve the issue.

Server Specs:
HP Proliant 7200
Windows SBS 2003 Premium Ed.
Hard Disk Space: aprox. 5GB free on C: partition, 7GB on the D: partition.
RAM: 2MB

I’m really need to get video output back up and running on the server ASAP.

I’d apreaciate any suggestions,
Thanks,
chuck.