I replaced my HD, loaded Windows and the only hitch is the battery function. Battery is detected and shows 100%. Battery gauge shows the battery active and charged with very little degradation (4 years old) yet when I unplug, it powers off. If I close lid, let it sit in hibernation for a while, unplug, plug back in and turn it on, all the programs are started as though a hard shutdown had never occurred. I have changed power settings, reloaded bios, etc. no change. Any ideas would be greatly appreciated.