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Purchased an MBP in 2010, very happy with it. Just recently I started using and external monitor(closed the lid on the MBP) and now I get screen issues like the ones in the picture below. Is having it connected to a non apple monitor causing this? anyone got a clue as to what could be happening? (first apple product so any info is greatly appreciated)

This the daily setup A tasted of the issue I get a closer look

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My google searches point to it being a logic board issue: discussions.apple.com/thread/3629505?start=0&tstart=0 –  Michael Pryor Feb 22 '13 at 21:06
    
"Flashing checkerboard pattern" - why did I not think of that search query!. It appears that you are correct @MichaelPryor. Thank you for your assistance. –  Geovani Martinez Feb 22 '13 at 21:32
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