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MacBook Pro will not load any user and shows a white screen

MacBook Pro 13-inch Early 2011

My MBP starts up fine but when you click the user to load (enter password etc) it just loads a white screen. Normal notifications pop up but the screen is white.

Any advice?

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Start up holding down the option key. Select the repair partition and run Disk Utility.

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Jonny crwdns2934231:0crwdne2934231:0
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