my monitor display is jumping around -- like the picture gets bigger and smaller. Then it will calm down and look normal for AWHILE. Then start to jump again. Any help? Thanks!How about a few clues? I am all guessed out today.

What make/model?
How old?
What happened prior to this?
Video adapter?
What happens with this monitor on another computer?
What happens with another monitor on this computer?
Anything ELSE relevant?Sounds like a dying monitor. Try a different monitor on that PC - or try that monitor on a different PC. What results do you get?sorry -- i'm not much of a computer person, but here goes....
monitor is Viewsonic E790
about 10 years old
everything has been great until this jumping
i only have the one computer & one monitor, so no idea what might happen if switchedTEN YEARS OLD! Blimey - that monitor doesn't owe you anything! Bin it.Agreed. You have gotten your money's worth. You need a new monitor.Well, it's not really ten years old, but I know it's more than five. Probably around seven, but I'm guessing you would GIVE the same advice -- to chuck it. How LONG do you think monitors should last?
Thanks for input.Any bit of IT hardware that lasts more than three years is doing well. This is a very fast-moving consumer sector.

Monitors that display these symptoms of old age can probably be repaired but when you compare the repair costs (£100 for a new board plus labour) with the cost of a new 17" monitor (£100), it's rarely worth saving the old one...I would try it on another computer as suggested before ditching it.
Surely you know someone else whp OWNS a computer.