Acer Monitor "Input Not Supported'


Jul 31, 2009
I have had this monitor since it was new last year. I plugged it in and it was fine. 2 weeks ago after downloading Windows Vista updates and Adobe reader updates I get a floating grey box that says "Input not supported' on my next start-up.

I tried another monitor on my tower and that is fine. I tried the Acer monitor on another tower and no floating grey box. Why does it now do this on my computer?

FYI, I did adjust the resolution setting s as Acer tech Support suggested but that did nothing. I mean why was it fine for a year?

I'd appreciate any help/tips. Thanks.