HT203001: OS X: About System Information and System Profiler
Learn about OS X: About System Information and System Profiler
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Helpful answers
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Jul 14, 2015 7:11 AM in response to spacelab2000by mario49,Hello spacelab2000,
After reviewing your post, it sounds like you get a gray screen when you turn on the computer. I would recommend that you read these articles, they may be helpful in troubleshooting your issue.
About the screens you see when your Mac starts up - Apple Support
OS X Yosemite: If you see a gray screen at startup
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