I've been having a problem with my battery not charging and if the A/C charger was removed the laptop will shutdown. But also, when I reconnect to the charger my keyboard and mousepad would stick and respond poorly. I assumed it was the lost of power. I just noticed, however, that when this happened I've had the old battery still connected. I removed it and the keyboard and mouse is working fine. Any ideas what might be causing this? Also, I have replaced the battery and it doesn't happen except that the new battery also does not charge and I think there might be a voltage issue but I'm not a computer person so any advice/ideas will help :)