monitor settings or reset

[ttew]

I tried to change the color a little on my monitor and clicked on a resolution on the list. Now the monitor only shows "unknown mode" I cannot get it to do anything. I then replaced the monitor with another one I have. It would show an image, but it was overlapped or multiple screens all reduced to one band across the middle. How do I reset the monitor settings or talk to the monitor that says "unknown mode"?

tom

[uesquebeathus]

we need to know what the monitor manufacturer and specification?

and more on the graphics card and the computer components?