Monitor HELP!

I have 3 dell 19in flat screens and 1 of them blacked out and has a screen saver that says "Dell - Self Test Feature Check - Red - Green-Blue-White".

Is there a way for me to fix it? or do I need to buy a new monitor?
 
Go into Display/Settings and see if the monitor has become "greyed out". If so, reactivate.

Unplug and reseat video cards. If that doesn't work, uninstall/reinstall the driver.

Try swapping positions of the non-working monitor to another video card.
 
ok, thanks. it looks like its a bad cable line connecting my monitor to my computer. i moved this weekend and it must have gotten screwed up. i put in 1 of my other cable lines and the monitor works fine.
 
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