Hello fellow tab users can I please ask for your help? When I plug my tab2 7.0 into my laptop via usb the battery icon shows a little red x over it and it doesnt charge! Is this normal or are there any settings I have to change to get it to charge from my laptop? I am new to this tablet thing as ive always been a pc drone! Can anyone please shed some light on this and help me please? Many thanx.