Hello, how are you?
My name is Paloma B., I am very happy to be able to try to help you in the best possible way.
I understand that your disks have BitLocker lock, I'm sorry about this problem.
Unfortunately, there is no way to recover a BitLocker key when it hasn't been saved in some way.
But Dell notebooks have a built-in BitLocker service from the manufacturer that automatically activates, this is probably the case for you.
I recommend that you check with the manufacturer for this function.
Also go to the link below provided by the manufacturer for more information on this, there are instructions on how to get this disabled.
https://www.dell.com/support/kbdoc/en-us/000125...
I await news.
If these procedures helped you in any way, please click on "I solved my problem" and also mark as an answer, so you can help others users.
We will always be available for whatever you need!
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.