Hi, AlexAlexandr!
Thanks for reaching out to Microsoft Community and posting your concerns. We are sorry to learn that TPM is gone after Windows 10 version 2004 update was installed on your Surface Pro 3. Thanks for taking the time to let us know about this and allowing us to help you out.
Since the issue started applying the update, is it possible for you to Use System Restore?
Let us know how it goes.
Kind regards,
Janette_Z