I hate my cd player

I hate my friggin cdplayer!! i went and bought a new pioneer cd player! forgot the model and im to lazy to check it out! Anyways i installed it myself everythin goes fine tell today!!it blanks in and out on me! like it will only play if im braking! so i take it out and check all my connections re crimp everything om thinkin ok fine it should work now i fire it up yeah it works! I go for a drvie to check it out and as soon as i go forward boom! damn thing pops right outa place now i cant figure out how to make it stay in or play someone help!! And i refuse to let a "pro" do it! this is what i mgonna do for a living!!