Hello, tech nerds in here My laptop 1. Runs out of battery real quick 2. After I shut it down with full battery when I try to switch it on it wont start coz it has no battery power. 3. When I plug in a mobile phone it charges even if its shut down (not sleep or hibernate) shut down So does this mean it uses a battery power even when its shut down.??? N is there any thing I can do.???