This exact same thing happened to me on my old computer. If you've tried everything you can to get it working, then you're outta luck. Better start saving up for that new monitor... although if you're getting a new computer soon, but need to use your computer NOW, you can find some used monitors cheap... around 40 dollars. Downside to this is that the monitor is almost always defected in some way (the monitor I got this way has a tendency to switch color palletes so that everything is more bluish... or more greenish... or more purpleish... you get the idea) or has a very short life. Still, if you plan on buying a new computer, then this is your best bet.