"Manage passwords and PINs" only covers the TPM case. How are passwords/PINs mananged if the PC doesn't have a TPM?
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If TPM does not in PC means you can't able to enable bitlocker.
I had own experience
If TPM does not in PC means you can't able to enable bitlocker.
I had own experience
That's wrong. It works without TPM and i do that on my Laptop.
See also https://blogs.technet.microsoft.com/hugofe/2010/10/29/bitlocker-without-tpm/
@beerisgood. Thanks for the information, once i had TPM device driver is missing, so that time I could not able to enable BitLocker, after reading the article link provided by you,i will try with another computer modifying by via GPO
@Rob190 The issue has been noted for clarification. Thanks.
@Rob190 the answer to your questions is in the article provided by @beerisgood (thanks for that).
https://docs.microsoft.com/en-us/archive/blogs/hugofe/bitlocker-without-tpm
In summary, because you don’t have a TPM, you must choose to either enter a password each time your PC boots, or provide a USB flash drive.

Closing via the above answer. Thank you all for participating.
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@Rob190 the answer to your questions is in the article provided by @beerisgood (thanks for that).
https://docs.microsoft.com/en-us/archive/blogs/hugofe/bitlocker-without-tpm
In summary, because you don’t have a TPM, you must choose to either enter a password each time your PC boots, or provide a USB flash drive.