black screen on Macbook Pro retina

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just got base macbook pro retina , seems once in while screen goes black can still see mouse cursor , screen comes few second later. seems happen randomly. last time browsing forums, time when playing music on itunes.

1 else having issue. coming mba , never experienced type of issue.
 

want run memory test, can recommend one?
 


Forums Macs Notebooks MacBook Pro


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