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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro mid 2015 15 inch retina - flicker and flash!
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<blockquote data-quote="Gogargirl" data-source="post: 1811075" data-attributes="member: 401576"><p>Thank you all for your replies!</p><p></p><p>Here's where I'm at:</p><p></p><p>1. Hooking up to an external monitor is fine in safe mode and gives the same choppy issues in normal boot. Did I say that the geometry flashes? Occasionally the screen goes black in the sequence and the cursor is then visible - and controllable - but the rest of the screen is black. Then the weird geometry reappears.</p><p></p><p>2. The local reseller is Apple authorized and is the only one in the locality. Any alternatives are a plane ride away, so I'm trying to diagnose a bit more myself, with your help.....</p><p></p><p>3. The machine starts fine in recovery mode, so I think I'm going to finish backing up, then try a Mojave reinstall.</p><p></p><p>One thing I still can't get straight: can there be a hardware problem if the Apple diagnostic (Power + D) says everything is OK?</p></blockquote><p></p>
[QUOTE="Gogargirl, post: 1811075, member: 401576"] Thank you all for your replies! Here's where I'm at: 1. Hooking up to an external monitor is fine in safe mode and gives the same choppy issues in normal boot. Did I say that the geometry flashes? Occasionally the screen goes black in the sequence and the cursor is then visible - and controllable - but the rest of the screen is black. Then the weird geometry reappears. 2. The local reseller is Apple authorized and is the only one in the locality. Any alternatives are a plane ride away, so I'm trying to diagnose a bit more myself, with your help..... 3. The machine starts fine in recovery mode, so I think I'm going to finish backing up, then try a Mojave reinstall. One thing I still can't get straight: can there be a hardware problem if the Apple diagnostic (Power + D) says everything is OK? [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
MacBook Pro mid 2015 15 inch retina - flicker and flash!
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