Black screen on win2k boot

I turned off the win2k (server)

I started it again, and the screen stays black.

It does all the pre win2k operations, showing the info on ram etc.
and after that it stays black
not showing
the black screen with the white progressing bar, and then the win2k screen till the ctrl+alt+del where to put the password

the light on the monitor is like when there is normal signal.

I turned it off because it acted wierd:
the cd-rom drive light would stay on, no cd in it, and I couldn't get to "my computer" nor to explore from the "explore" command of the start button.

I ran an online virus check with Panda, and it found and cleaned a couple of files in winnt the virus info were generic "trojan horse"

Another problem was that I could not type in the IE address filed the www.whatever.whatever, it would have given me "operation completed" with a blamk page, but I could surf if typed the whole url: http://www.whatever.whatever

I am using one of the clients that go thru the server for the internet.

I am willing to raise the points.

Thank you