If your personal device has BitLocker enabled, it is possible that the BitLocker recovery key got stored in your NC State Microsoft account. For university-owned devices, you can go through BitLocker recovery for a university-owned device
Learn more about Device Encryption in Windows or see other options for where else you might find your BitLocker recovery key.
It is strongly recommended to NOT attach your NCSU Microsoft account to your computer. If you have attached your NCSU Microsoft account to your computer. it is strongly recommended that you remove your NCSU account as a work or school account on your computer.
Please note that you will not have access to your NCSU Microsoft account after separating from the university, and any information stored there should be backed up before you separate.