This message was posted on behalf of Intel Corporation
Thank you very much to Al Hill for the information posted above.
I just wanted to let you know that all the information available or supported in our forums or other departments is related to Intel products. In this case you are using an Alienware laptop, and in that case in order to find out how to open the laptop the best thing to do will be to get in contact with manufacturer, and also for further technical or warranty support, since they might have different troubleshoot steps to fix this problem and also they should have the specifications about the battery on the laptop since they build it, also there is a possibility that the laptop will need to be replaced and in that case they can always assist you with that.
Any questions, please let me know.