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4 Posts

10-13-2017

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t470S 20HG Unable to Change BIOS setting using configuration tool or WMI

2017-10-13, 18:22 PM

Due to a issue with the firmware on this sku the TPM is not being provisioned correctly.   updating the firmware fixes one issue but we need to clear the TPM which required user interaction on reboot.   Unfortunatly we cannot change this from whithin windows.   Is tehre a way to change teh stting so that I dont have to visit hundreds of machines?

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726 Posts

06-09-2015

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Re: t470S 20HG Unable to Change BIOS setting using configuration tool or WMI

2017-10-16, 12:49 PM

If you know what the owner password is (owner authorization), it is possible to clear the TPM in a WMI script, by using the Win32_TPM class:

http://msdn.microsoft.com/en-us/library/windows/desktop/aa376420(v=vs.85).aspx

 

 

If you don't know what the owner password is, you can use a different method:

http://msdn.microsoft.com/en-us/library/windows/desktop/aa376478(v=vs.85).aspx

However this method requires a shutdown/reboot, and then someone sitting at the PC to press F9 to confirm the action (physical presence).

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4 Posts

10-13-2017

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Re: t470S 20HG Unable to Change BIOS setting using configuration tool or WMI

2017-10-16, 15:09 PM

Hi,   Unfortunatly is win 10 1607 so the password is not stored.   I needed to be able to clear it without interaction.   You can supress the interaction if you change the physical presence setting in the bios manyally.   Unfortuatly applying a configuration to file to the machine with that set does not work.   Nor can you suppress it setting it via WMI both methods report success but dont actualy work.

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4 Posts

10-13-2017

CA

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Re: t470S 20HG Unable to Change BIOS setting using configuration tool or WMI

2017-10-16, 15:16 PM

This is a bigger issue that it initially appears given the security release last week about RSA Keys in the TPM....

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