I'm going to have to pull a system from storage to have a look into this and verify, but this may help:
Embedded Security Device |
This option becomes available if Embedded Device is set to Available. Embedded Security Device (Hidden or Available) turns the Trusted Platform Mechanism (TPM) on and off. Device Hidden is the default. If this option is made available, the following options become available:
To enable the Embedded Security Device and to access any security features associated with the device, you must enter a setup password. Setting a device to Available enables the operating system to access the device. Hidden makes the device unavailable. It is disabled by the BIOS and cannot be enabled by the operating system. |
I think that once you enable ESD, you needs to save settings, reboot and bo back into the BIOS to see the new settings.