If the TPM
chip fails, you can restore the encryption key from its backup
stored on your USB flash drive.
If you see a message on
the control panel that the TPM has been replaced when you turn on
the product, select Restore from
Backup. Enter the administrator password, if
necessary.
Insert your USB flash
drive containing the stored encryption key into the external USB
port on the front of the product.
Select Restore from Backup. The stored
encryption key is restored to the TPM chip.
When the completion
message appears, select OK. The product restarts.