Dear mates, I am having Dell latitude E5440 laptop having windows 8.1 OS. Today morning while am using my laptop its automatically shutting down by itself. after that whenever I try to switch on laptop its not getting switched on. whenever I press power button the light blinks on the power button switch for 2 seconds then caps lock indication button blinks in keyboard and then battery charging indication button blinks and no other response.whenever i put laptop with AC adaptor battery charging button indicates until switch on the main power. SO i thought the problem may be due to electrostatic current so i remove the charger and then battery then i press power on button in my laptop for 90 seconds then but my battery back and then connect to ac power and switched on the laptop. since am facing the same problem its not getting switched on but power on button blinks for 2 seconds and then no response. Please help me regarding these issue.