HT201177: Get help with video issues on external displays connected to your Mac

Learn about Get help with video issues on external displays connected to your Mac
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Q: Late 2011 11" MacBook Air, 24" Cinema Display. Computer won't start with display connected. OK without. With computer operating, connecting Cinema display turns computer screen to blue/blank.

Late 2011 11" MacBook Air, OS X 10.7.5, 24" Cinema Display. System has been operating normally. Tonight could not start computer. Disconnected all cables, started while holding down Option key. Started normally. Connected peripherals, including Cinema Display; computer went to blank/blue screen, no picture on Cinema display. Unplugged mini display port, computer returned to normal. We had some lightning today, All power to computer and display routed through UPS Power Backup/surge protection. Any thoughts?

MacBook, Mac OS X (10.7.5)

Posted on Jul 15, 2013 10:53 PM