Starting Dell laptop when battery faulty

I have a Dell Inspiron 6000 laptop which I have just discovered has a faulty battery, and although it is plugged into a power socket, won't start up. Any thoughts on how I can get around this?
Remove the battery...
Thanks...good thought. Problem is - it doesn't work. It would seem that the computer just won't boot up unless there is a working battery in place. But I don't want to have to buy a battery just for one boot. Any other thoughts???