I have been having many problems starting my notebook. when I push the start button nothing happens, I have to unplug power cord and then plug it back in, without the battery installed, then it will start. The battery checks out okay, it will run my notebook for over 2 hours. I have been told that I may have a software problem, maybe with my Win XP Home. I can not re-install XP home because my rescue disk reinstalls everything erasing everything installed! Also my clock does not keep the proper time. Everything seemed to happen at the same time.