If the monitor won't come out of stand-by mode, I would suspect that your AGP slot on your MB is fried. I had this problem a while back and changing the MB solved the problem.

In case your MSI monitor still won’t turn on or display anything, you can use some other suitable fix to resolve the problem. 2] Choose the correct input source for your monitor.

One of the more frustrating things that could go wrong is when your PC's screen won't turn on. You may find that your fan is working, but there is nothing on your display, or there is just no signal.

A non-responsive screen can make you think that the laptop isn't powering on when, in fact, it could be running just fine, with the display failing to show anything.

Your coffee is brewed. Your mind is sharp. You go to turn on your computer, but nothing shows up—all you see is a black screen, with no explanation as to where all your precious memes of the day ...