Replaced the battery in laptop and loaded in 3.1 which works great. After about an hour or so the battery light turns from green to amber and starts flashing. At that point the computer shuts down. The laptop is plugged in the entire time. I then have to restart the computer and if it doesn't boot up I have to remove and reinsert the battery for it start correctly. The battery turns green after a few minutes and all is well until about an hour or so of inactivity. Any ideas?