try removing the SSD and reinstalling it again just in case the connection has some foreign material that may be affecting the connector
make sure your BIOS is set for UEFI
use bitlocker without hardware support for nowusually the UEFI BIOS handles that so look for an update for your rigbitlocker is very secure, removal of a protected drive is secure but it can be wiped and reused with new operating system and no residu...
