My wife has a Dell Inspiron 1150, with Windows XP, and it won't run on the battery. It runs fine when it's plugged in but when the plug is removed, it just dies instantly, like there is no battery. I've checked the power settings in control panel, and I've checked in BIOS and it says the battery is charged to 97% and the AC adapter was reading 65W, which the Dell troubleshooting guide said means that the AC adapter is working fine. I also removed the battery to check for debris or bent pins or something, and I started the computer without the battery and it runs fine. But it just won't seem to use the battery. Any ideas?