1
For the Bitlocker Recovery Key problem:
If your drive is encrypted with Bitlocker, the only place the Bitlocker Recovery key is automatically stored is on the associated Microsoft account on the link below, be sure to check any Microsoft account that may have been used on the PC and also any work or school account that may be linked to the PC.
(Note, even if your device does not show on the Microsoft account, the Bitlocker Recovery Key may still be available on this link)
https://account.microsoft.com/devices/recoverykey
2
If you are still unable to locate the Bitlocker Recovery Key, if you are unable to see the SSD when you try to reinstall Windows, if you have an Intel processor:
You need to go to the support page for your PC on the manufacturers website.
From the chipset/storage section, download the installer for the Intel RST drivers.
Extract out the drivers from that installer and put them into a new folder on your USB.
When you reach the part of the installation where you cannot see the drive, click 'Load Driver, then select one of those Intel RST drivers.