Use tpmtool gatherlogs %userprofile%\Desktop and vérifiez le TpmEvents.evtx event log it generates for clues. (From what Je peux tell, this basically does the same as filtering the Windows > Système event viewer log for events from "TPM" and "TPM-WMI").
Causes for TPM locks could include Windows Hello auth failures, inadvertent power downs that increment the échoué authentication register, typos at the prompt etc.
Installed any logiciel or pilote mises à jour récemment, including ones that updated any UEFI/BIOS?
Might be worth checking event viewer for any other Critical/Warning/Erreur level logs (filter the Windows logs), as suggested in this discussion sur le MS community forums.
Other tools vous pouvez query to vérifiez le TPM is fonctionnel correctly are get-tpm in an Administrator PowerShell, and the tpm.msc management console snap-in.
Some event IDs that pourrait être pertinent include
14: TPM périphérique pilote encountered a non-recoverable erreur, preventing TPM services.
17: TPM matériel échoué to execute a command.
1040: problème related vers le TPM and Secure Boot
1796: another Secure Boot mise à jour problème ('not disponible', etc)
Related reading
