"Input Not Supported" Bouncing around Acer Monitor?

plainjane

New member
Jun 27, 2008
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I don't know what my mom did, but her monitor has a box that says "Input Not Supported" thats bouncing around. It was working fine before, anyone know what will get rid of this?
The buttons at the bottom of the monitor, other than the power are not working, and won't change or bring up menus like usual.
 
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