This started when I managed to zap all the system files and drivers on a Win98 laptop (don't ask). Got the OS reinstalled and everything working except the laptop now thinks it doesn't have a battery. Battery itself is fine, and I've been through all the troubleshooting steps on the Dell site with no joy. Add Hardware says the battery has the correct driver. Machine works fine when plugged into the adapter (and since I use it only occasionally, this is acceptable). I'm obviously not going to spend any money on a machine like this, but it's an annoyance that I'd like to fix.