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Suddenly a purple vertikal thin line shows in the middle of my screen permanently. Restart doesn't help. What could it be?

Suddenly a purple vertikal thin line shows in the middle of my screen permanently. Restart doesn't help. What could it be?

iMac, Mac OS X (10.6.6)

Posted on Oct 14, 2013 10:13 AM

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1 reply

Oct 14, 2013 4:20 PM in response to Leif59

Hardware problem (logic board?) Run Apple Hardware Test from the DVD that originally came w/your computer and report back the results.

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Suddenly a purple vertikal thin line shows in the middle of my screen permanently. Restart doesn't help. What could it be?

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