I have tried the monitor on a different computer and it was working just fine, so I know that the monitor is the issue. I have tried to re-seat my cards and RAM but I still have the same problem. I'm on Windows 7 and I have a Dell Dimension E521. My graphics card is a NVIDIA GeForce 7300LE.
I'm currently using my on-board graphics card which works, so I guess the problem is just that I can't use my graphics card. What's going on?
Is there any explanation for what happened, and what can I do to get my PC working properly again?