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Apple Computing Products:
macOS - Desktop Hardware
White vertical lines on iMac screen
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<blockquote data-quote="chscag" data-source="post: 1735869" data-attributes="member: 46727"><p>Welcome to our forums.</p><p></p><p>It may be the graphics card in your iMac which is going bad. The way to check that out is to attach an external monitor or TV to see if you get those same vertical lines. If the vertical lines appear on the external monitor, then it's likely a graphics card problem. If the external monitor is clear, then it could be the iMac display which is failing. The graphics card in your iMac is replaceable but expensive.</p></blockquote><p></p>
[QUOTE="chscag, post: 1735869, member: 46727"] Welcome to our forums. It may be the graphics card in your iMac which is going bad. The way to check that out is to attach an external monitor or TV to see if you get those same vertical lines. If the vertical lines appear on the external monitor, then it's likely a graphics card problem. If the external monitor is clear, then it could be the iMac display which is failing. The graphics card in your iMac is replaceable but expensive. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
White vertical lines on iMac screen
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