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Apple Computing Products:
macOS - Notebook Hardware
15" MBP MB display scrambles (with and without 2nd monitor)
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<blockquote data-quote="Geeky1" data-source="post: 487161" data-attributes="member: 34442"><p>Classic sign of a video card problem. I've also seen this happen with bad system memory, but only very, very rarely.</p><p></p><p>I don't know if memtest will boot on these things... I'd think it ought to, but I don't know for sure. If someone can confirm that it does, I suggest you download that and burn it to CD, boot off it and let it run through at least one complete cycle.</p><p></p><p>However, I suppose it doesn't really matter... whether this is a gpu problem, a vram problem or a ram problem, it's almost guaranteed to be a hardware fault and it'll have to be repaired.</p></blockquote><p></p>
[QUOTE="Geeky1, post: 487161, member: 34442"] Classic sign of a video card problem. I've also seen this happen with bad system memory, but only very, very rarely. I don't know if memtest will boot on these things... I'd think it ought to, but I don't know for sure. If someone can confirm that it does, I suggest you download that and burn it to CD, boot off it and let it run through at least one complete cycle. However, I suppose it doesn't really matter... whether this is a gpu problem, a vram problem or a ram problem, it's almost guaranteed to be a hardware fault and it'll have to be repaired. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
15" MBP MB display scrambles (with and without 2nd monitor)
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