I am having a problem with my battery and my Toshiba laptop. My battery is not good now and it says "There is a problem with your battery, so your computer might shut down suddenly." and I cannot let it fully die because it will go to a black screen and still will not die fully so I can let the battery die and then fully charge it again. What can I do? I can't take out my battery neither. I have a Toshiba Satellite L775D-S7112. Also, I do not use the laptop cooler I bought with it