I had that same problem. I actually got a new monitor for that 1 week ago.

And i had a Windows ME. The first signs were vibrating lines on the screen (perhaps a virus i accidently downloaded), this also happened before the lines; was when i restarted my computer, in anyway; there was almost a mini explosion, like sometimes all red, or blue, green, purple, sometimes mixed, sometimes all. Then a week ago it went KABLEWEY! and the monitor wouldnt work, it would turn on, but no visual input was seen. And it made funny clicking noises too.

So Nobody, i highly reccomend u either buy a new moniter that is same brand or higher that is compatable with your machine. Or get a guarantee on it as well.

I hope i helped.