Laptop turns off when AC power removed and battery plugged in

[mosherben]

Hi all,
I have a Dell Latitude D400, and lately I've noticed that when I remove the AC power cable when it is on, and the battery is plugged in, the laptop would turn off as if the power had been cut. It's a minor problem, as I can simply just use standby when I'm moving about the house

Does anyone have any ideas how to solve my problem?

Cheers,

[Leggie]

Does it normally run OK on just battery power?

[mosherben]

Does it normally run OK on just battery power?

Yup, always has.

Anyone have any ideas?

[blueball]

My ASUS EEE does that- it is a graphic driver problem. My workround is to put it in standby, remove/insert power, then wake it up again. If I just insert/remove the power without going to standby it crashes with graphic driver errors.