1
Most likely, there was a firmware update installed on your PC with the update, go to the support page for your PC on the manufacturers website to check if there is any BIOS update available that may need to be installed.
2
If that does not resolve the problem, boot your system into BIOS, find the TPM settings, and there should be an option to reset TPM keys to factory keys, before doing that, it is best to backup your files to ensure against data loss.