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Purple and green artefacts after reinstall

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Hi all,

 

I recently re-installed my Macbook Pro Retina 15″ (Early 2013) after i thought it was running slow.I am on OS X Yosemite 10.10.04 – 2.4GHz – 8GB RAM – GeForce GT 650M 1GB

 

The computer has been used heavily for video editing this past month, the computer had no issues before the reinstall.

Now i’ve reinstalled it to try and wipe some of the rubbish that i had on here originally I’m getting strange purple and green artefacts and issues where the shadows would be for windows on top of other windows. They happen randomly when a new window is open on top of another and DOES NOT effect the video work being rendered out, but is becoming an annoyance. The computer also feels a little MORE sluggish than before the reinstall.I reinstalled via the system partition i believe its called and wiped the Mac SSD (quick wipe).

 

See attached image, any help would be greatly appreciated!

 

Someone has also just sent me a link to this: http://www.apple.com/uk/support/macbookpro-videoissues/Does this fall under the same issue?

 

http://pasteboard.co/2CtcRbR3.jpg


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