Hi,
You could try to disable Automatic Startup Repair ,using the command below to disable.
bcdedit /set {default} recoveryenabled No
bcdedit /set {default} bootstatuspolicy ignoreallfailures
In addition, here are some posts with the similar issue with yours, just for your reference, you can try the method mentioned in them:
https://www.eightforums.com/threads/bitlocker-turn-on-or-off-for-os-drive-in-windows-8.21271/page-3#posts
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.
Hope above information can help you.
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