Hi [NAME] if BIOS update file does not run, the file is damaged and another download should be undertaken and checked for file integrity before attempting to run it from within your Local Admin Account.  As BIOS does not see the missing drive, please reseat the NVMe drive in its PCIe slot having cleaned its copper connections with a dry, clean lint free cloth. There are many instances where the NVMe drive card has mistakenly been installed in the heat shield part of PCIe slot, so double check that its installed in the electrical connection part of PCIe slot. 
So I was getting on my computer after a long day, and it wouldn't boot properly. It was stuck on the Alienware screen with nothing below it, and when I pressed space, a blue bar appeared along with keys for startup options and whatnot. But when the blue bar loaded it wouldn't do anything. So I just shut it down and tried again. It worked, I booted it up, although the boot time was unusually long.And, when that usually happens, my D drive has unregistered. It's happened before, I've usually been able to fix it by getting every latest Alienware and Windows update I've missed, so that was my go-to.Except, now, I've been trying to get the 2.11 BIOS update, but it just won't install. I tried using the Alienware Updates app, and SupportAssist, but none of them have been working for me. I've been trying to avoid checking the hardware or resetting my computer as that's my last resort but if nothing works I may have to.Is there any other solutions I can try to fix this? 
m15 R1, D drive missing and BIOS won't update