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

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Fancie

Q: I get a chime and white screen, but after a few minutes the screen goes black. Help!

I came out to a black computer screen. I can see the mouse arrow but otherwise nothing. I disconnected the computer and tried turning it back on. It starts up like usual but bar going across under the apple freezes and the screen goes black. I can hear the computer running. Help!

iMac, Mac OS X (10.5.6)

Posted on Feb 1, 2015 5:48 AM