I have googled this and only find similar (lots, many) with the same question. My battery icon, when scrolled over, says: Battery plugged in (not charging) and will discarge pretty fast. When it gets to 0% my laptop shuts down. I am running vista home premium and laptop is 2 years old. This problem just started two weeks ago. No, have not done any installs, other than windows updates, and I have restored to previous date. Sometimes rebooting makes the message go back to 'charging' and sometimes rebooting does not work. Funny that the laptop shuts down at 0% since it is still plugged into the ac. Is it a vista problem; software problem, driver problem or bios problem? Google only brings up 100's of same question with no answers. Thanks to anyone who can answer this puzzle. Again, it has only happened in the last two weeks; about 8 or 9 times.