I have an HP 15-DB0005DX laptop that I want to put a second sshd in (Samsung EVO 850). The oem is a 128gb m2 which I will leave in, I ordered the bracket and connector board from Impact Computers and I thought the ribbon cable would come with them but it didn't so I have to order it now. When I put the battery back in and assemble the computer it says check sum error and defaults to the original bios and will not start on the battery, just the ac until I dl and update the bios, why it this. Thanks, Mike