Trouble-shooting work-flow goes something like this: Check in computer's BIOS about it's status.- For example, be sure it's Enabled.Check for a BIOS firmware update for your computer.Check for a standalone firmware-update for just the TPM.- Oddly, sometimes you have to disable the TPM in BIOS, apply the TPM-firmware update, and then re-enable it. I think it might be because it can't be in-use in OS while updating itself.
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DS 07/21: How to fix TPM device not detected? What is your go-to fix?