This is simply a quick video showing how to open the case on this HP Envy M6 AE 151 D laptop since there didn’t seem to be anything online. These were a pretty popular Black Friday sales item this year (2015) so there are probably a few people working on replacing the default mechanical 1 Tb drive with a SSD, adding memory, etc.
These came without a optical drive. The battery is NOT removable. But you can upgrade the battery also by opening the case. I’ve had a couple open replacing the drive with a SSD.