Windows 2000 Shut Down/install Crash

Can any one assist me? here's my dilema...2 computers (same config) started blanking out and stopping/blanking out on the windows 2000 screen. I clean one and i think it's ok. the other computer is hanging on the re-install. It took me a while to get the computer to boot up on the cd becase the monitor light was green but the sreen was black.

Now when the install gets to network components, etc. the screen get's the lines and that's it. help!!