We download Angry bird With happiness But When we play it on Window 7 We get multiple errors.So sad But there is Solution of All errors While play it on Window 7.With sequence we get two main or Popular error for angry bird Which are Opengl 2.1 or later error and Texture is too large.And also when we search it on google then we get only one solution which To update your window video driver.But we update it through
device manager>computer management>display>Video driver and right click on it and update hardware driver as shown below but we get this window--


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Now it is time to rid of this,So Read carefully Go to your Window Update>Window Setting then Set it Check and Install all windows update.