The quickest test is to install monitor on another system and check results. If you hadn't already reseat your video provided you have a video card. Check the monitor cable as well and its plug-in connector, sometimes a pin is bent/broken or pushed in not having good contact. If you're not capable of fixing a monitor just toss it as repairs can be iffy and dangerous if you don't know about hi-voltages. Besides, you may not even get a repair part as these are becoming hard to come by in std. TV shops and such. On top of all that if sent for repairs it maybe more than the value of monitor especially CRT types. Up to you...
So a monitor of mine is acting up. I have an alternative monitor, but it's pretty horrible. I think that this monitor might be salvageable. Take a loook:
Looks pretty bad, huh? Well, normally, I would just chalk up a loss, but it does something kind of strange that gives me thoughts that it has life left in it.
Weird, huh? Shows the settings for the monitor just fine! It leads me to believe that it's an issue at the PC level.
I've tried the built-in degaussing feature to no avail.
Any advice on what setting to tinker with to achieve results?