Pamela Allen

Q: at startup, my screen is covered by vertical lines

It's a five year old iMac.  It restarted itself when I was out of the room.  I heard the chime.  There wasn't a power outage.

There were vertical ribbons, the apple shadow, and a progress wheel.  Then it went to a plain white screen.  I reset the PRAM, unplugged everything, started in safe mode.  I managed to start up and the wireless mouse is recognized as well as the keyboard but the screen is many colorful verticle lines with shadows of what would be the desktop. Do you think it could be sorted at home?

iMac

Posted on Dec 13, 2015 11:24 AM

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Q: at startup, my screen is covered by vertical lines

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