Why did you need t replace the monitor on the Dell 260? If it was because the old monitor and PC didn't show anything on the screen, then I would say that the PC is at fault. Since we know that the new monitor is working, I can only assume the 20 is the culprit. Possibly the PC's resolution is set different. Perhaps the 260's video is corrupted. Good luck
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sometimes, there are two VGA ports on the back of the computer. If you have another monitor, does the dell work with that monitor?
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