I have a Lenovo Thinkpad that I use mostly while traveling. This morning I turned it on and couldn't get beyond the background picture that comes on before I login. The battery usage was at midpoint, but I plugged it into the power strip just in case. It has remained at midpoint for about 1.5 hours now. Does this indicate I need to replace the battery? Wouldn't it be totally off if the battery were dead? That has never happened to me before, so thought I'd check here first. Thanks for any feedback you can give me.