I agree with JOSTEWCREW as well. I to have had this issue with my Dell Inspiron 15 laptop. If you are able to access UEFI/BIOS in advanced options you can poke around in there as well. On the dell.com website enter your Service Tag Number (and register if you haven’t already) and check out the posts there as well. You can find your service manual there and it will show you have to access and check your device’s hard drive and/or other possibilities for troubleshooting.
Nice write up! I've done this numerous times. A word of advice and EXTREMELY helpful hint: , permanent double-sided tape." Not the commercial or industrial type but just your regular 3M permanent double-sided tape dispenser type, it comes in yellow packaging and usually a 2-pack. Your welcome, lol!