I have a strange problem with my Aspire 5315. If I leave the power plugged in and after the battery is fully charged the laptop powers off and then you cannot restart it from the on button. The only way I can get it to work again is to take out the power and the battery and then hold down the the On Button for a minimum of 2 minutes and it will then work again. As I am a technician I have had it to bits checked all connections replaced the plug for the AC Adaptor to the motherboard also replaced the battery but the problem still exists. Anyone got any ideas what could be wrong. Kind regards David