Packard Bell EASYNOTE F7305 notebook will not turn on. Without the mains adaptor plugged in it does nothing when the mains adapter is plugged in it shows a low battery warning but does not show that it is being charged. The charger also appars to make a clicky noise and the led on the power lead flickers when connected to the notebook but does not flicker when disconnected. the laptop will not turn on at all no fans spin up the only thing it will do is show low battery led.