Mac won't get to login screen- blue screen!!!

Issue : My computer came up with a black screen last night and I forced a shut down. Now when I start up my Mac, the apple symbol comes up with a blue screen and will go blank- not black and will not proceed to the log in page. I have the BootCamp software on it ad I cannot access the Windows side of my machine either. I have tried leaving it alone for several hours and trying again but nothing happens. Once it hits the blank page it just sits there unless I force a shut down again.

Hello Rambet93,
Thanks for using Apple Support Communities.
To troubleshoot this issue please follow the steps in the article linked to below.
Mac OS X: Gray screen appears during startup
Take care,
Alex H.

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