Woh...weird... I always thought it recharged when it was on, like a car battery... plus, it should work without a battery anyway.
Does this mean that if the battery was flat, you'd have to recharge the battery first before running it?
This could just be a problem with the laptop and the way it works with the battery, but it could also be the power supply I guess (though I don't see how)...hmm...very weird indeed... I have no clue