Hi, I have an Hp Notebook 15-f1272wm (Energy Star). The laptop only turns on when it is plugged in to an outlet even though the battery is 100% full. Also when I disconnect the laptop from the charger, it turns off after two minutes. I have already checked the power options in my computer and everything is as it should be. Basically, the computer can detect the battery and even charge it till its full, however it powers off completely after two minutes on battery power and it can't start with just the battery as a power source.