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Apple Computing Products:
macOS - Desktop Hardware
My iMac(early 2008) video display glitches, hard freezes, help!
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<blockquote data-quote="chscag" data-source="post: 1253934" data-attributes="member: 46727"><p>Everything I read in your posts point to a malfunctioning GPU. When you opened the iMac, was the GPU fan operating normally? And are you measuring the temperatures? If the GPU fan is not working, that will cause the system to freeze and possibly cause the color and white splotches you see on the screen.</p><p></p><p>As you mentioned, you can not swap out the GPU in that machine. It would have to be the entire logic board that needs to be changed.</p></blockquote><p></p>
[QUOTE="chscag, post: 1253934, member: 46727"] Everything I read in your posts point to a malfunctioning GPU. When you opened the iMac, was the GPU fan operating normally? And are you measuring the temperatures? If the GPU fan is not working, that will cause the system to freeze and possibly cause the color and white splotches you see on the screen. As you mentioned, you can not swap out the GPU in that machine. It would have to be the entire logic board that needs to be changed. [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
My iMac(early 2008) video display glitches, hard freezes, help!
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