Answer by  
                                                                                          MukeshSnehi (11)
                                                            
                          
                          
                                                           You Can Do This – Start>Accessories>Accessibility>Onscreen Keyboard. When You Will Appear With Onscreen Keyboard You Will See Separate 10-Key And Num Lock Button Is Selected. Just Click On It And Deselect It. It Will Solve Your Problem. And Make Sure That Mouse Keys Has Not Been Turned On.