Screen flickering and running hot

I have had this laptop for five and a half years and all of a sudden the screen is constantly flickering and changing color. It also seems to be running warmer than usual as well.
I don't want to have to buy a new one. What could be the issues!?

Any answer yet?  Mine is also early 2011 model.  13 inch. OS X Lion

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    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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