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Mar 24, 2014 1:24 PM in response to JDOWD91by Allen A,Hello JDOWD91,
You may want to try changing your display settings to "Extended desktop" mode, rather than "Mirroring" mode, as this can cause issues with displays that have different native resolutions than your Mac's display.
Extended desktop
With extended desktop, your displays are treated as one, continuous desktop.
- Make sure each display is properly connected and powered on.
- From the Apple () menu, choose System Preferences.
- From the View menu, choose Displays.
- Click the Arrangement tab.
- Disable (uncheck) "Mirror Displays".
OS X: How to use multiple displays with your Mac in Mountain Lion and earlier
http://support.apple.com/kb/HT5019
Cheers,
Allen
