Help!! Monitor out of scan range

[Unclemo]

I have a Dell PowerEdge 1300 running NT4 workstation. When I boot up once I get into windows it says out of scan range and no image! The monitor is a simple older (3 or so years) Dell...
How do I change the scan range before going into windows?
THanks

 

[Gunbuster]

boot to safe/vga mode