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chscag

 
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Member Since: Jan 23, 2008
Location: Fort Worth, Texas
Posts: 40,273
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Mac Specs: 27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, 3 iPods, OS X Mavericks

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Looks like a defective graphics processor. Since it occurs both on the internal and external display, it almost has to be that. Check with Apple support as I believe there were some 2007 MBP machines which are covered under an extended warranty because of defective graphics adapters. When you contact Apple, have your year, model, and SN handy.
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