Answer by  
                                                                                          swatishrivastawa14gmailcom (8)
                                                            
                          
                          
                                                          most likely you have gotten grime and gunk under the key. Simply pop the key up using a butterknife (or any flat object) and then clean the area under the key. the key will just pop up and after you clean it; will snap back in place. or take it to a store