My laptop won't turn on. I plugged the charger and the battery light seems to work but there is another 3 icons that won't . The icon that looks like a cilinder, the icon for the wifi and the icon for a lock won't turn on when I press the power bottom. I read that the icon for the cilinder means that the laptop access the heard drive and when I try to turn on the laptop with the power bottom it light up for a secon like trying to access the heard drive but gen it turns off again . Please help !