Time for a new TPM?

[HowPainful]

Hi,

I had my device prompt for my bitlocker recovery key this morning, which I expected was caused by it trying to update to Windows 11. I guessed this based off a totally different system a few weeks back doing this. However, in this case this HP was not trying to update to Windows 11, and I am leaning towards an actual hardware issue. I am posting here to get opinions or ideas on things to check. Order of events:

• Bitlocker tripped, looking for recovery code
• Enter recovery codeboot into Windows
• Suspend Bitlocker
• Reboot
• When trying to resume bitlocker after reboot receive an error
  • A compatible TPM can't be found
• Open TPM admin
  • No TPM found
• Open Device Manager
  • Device can't start (code 45)
• Restart to BIOS
  • "Fascinating: error:
    • Question value mismatch with Option Vaue!
    • (TPM Device: mismatch value is 255.)
• Clear BIOS & restart. No change
• Back into BIOS, disable TPM reboot, no change.
• Back into BIOS re-enable TPM, no change
• Into Windows, download latest firmware installer F.35 for Envy 17t-cg100
• Install BIOS successful, reboot
• Into BIOS... NO TPM OPTIONS SHOW UP!!
• Boot into Windows
• Bitlocker can't be Resumed
• Device manager shows TPM and indicates it started successfully
• TPM Manager says TPM not ready
  • Click Prepare TPM and receive message that the TPM is ready.
    • Reboot... no change.
• Reran F.35 firmware installer. No change.

I have the HP Care Pack for the device, but it's past its manufacturer warranty. Is it time for hardware work?

Anyone have other suggestions on things I can try? (Please don't say rollback FW, that's a pain. But seriously... if that is definitely the answer...OK)

Thanks!