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<blockquote data-quote="chscag" data-source="post: 1892029" data-attributes="member: 46727">It could be a graphics card failure or an intermittent GPU.&nbsp; (Based on your description.)The kernel panic report really does not tell us much.Some suggestions:&nbsp;&nbsp; Test the memory.&nbsp; That machine originally came with 4 GB and now has 4 x 8 GB modules.&nbsp; Any good memory testing utility can be used.[URL unfurl=&quot;true&quot;]https://www.memtest86.com/[/URL]Try booting the machine in Safe Mode:&nbsp; Hold down the shift key as soon as you hear the chime.&nbsp; Keep holding until the Apple appears.&nbsp; Run that way for awhile if possible.Try resetting the NVRAM and SMC:[URL unfurl=&quot;true&quot;]https://purplecomputing.com/tech-how-to/how-to-reset-nvram-or-pram/[/URL][URL unfurl=&quot;true&quot;]https://purplecomputing.com/tech-how-to/how-to-reset-the-smc-system-management-controller/[/URL]Let us knowAnd, Welcome to our forums!</blockquote>

[QUOTE="chscag, post: 1892029, member: 46727"] It could be a graphics card failure or an intermittent GPU. (Based on your description.) The kernel panic report really does not tell us much. Some suggestions: Test the memory. That machine originally came with 4 GB and now has 4 x 8 GB modules. Any good memory testing utility can be used. [URL unfurl="true"]https://www.memtest86.com/[/URL] Try booting the machine in Safe Mode: Hold down the shift key as soon as you hear the chime. Keep holding until the Apple appears. Run that way for awhile if possible. Try resetting the NVRAM and SMC: [URL unfurl="true"]https://purplecomputing.com/tech-how-to/how-to-reset-nvram-or-pram/[/URL] [URL unfurl="true"]https://purplecomputing.com/tech-how-to/how-to-reset-the-smc-system-management-controller/[/URL] Let us know And, Welcome to our forums! [/QUOTE]

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