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Q: 2013 27" iMac display suddenly blue with white vertical lines and can't see anything (different to the black screen problem I've r ... 2013 27" iMac display suddenly blue with white vertical lines and can't see anything (different to the black screen problem I've read about on the web). Anyone else have this problem? more
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Helpful answers
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May 7, 2015 7:24 PM in response to walterssong1by Mike Sombrio,Ttry running Apple Diagnostics Using Apple Diagnostics - Apple Support
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May 7, 2015 7:37 PM in response to Mike Sombrioby walterssong1,Thanks, but I can't see anything on the screen so can't respond to any prompts?
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May 7, 2015 7:42 PM in response to walterssong1by Mike Sombrio,So you tried running diagnostics? Make an appointment and take it to the nearest Apple Store or AASP for a proper diagnostic and estimate.