T420 (and others?) Management BIOS WMI class does not

We deploy Windows 7 for laptops Lenovo Microsoft SCCM. We should change a few portable on any computer BIOS options, more importantly enable the TPM for Bitlocker.

I read the BIOS Lenovo Windows Management Instrumentation Interface document and tested provided example scripts. "cscript.exe SetConfig.vbs SecurityChip Active" seems to work as expected, and so do some other settings such as disabling modem, fingerprint reader etc. Run the ListAll.vbs script after modifying the parameters with SetConfig.vbs prints the correct values changed, so something to be saved.

However, after restarting the laptop, the BIOS settings are back as they used to be. The system reports even "Change Configuration, restart the computer" or something like that when it restarts, and all seems fine but... The settings just not being saved or not change does the same. After the reboot, ListAll.vbs also reported the original settings.

Any ideas? Should not SetConfig.vbs save the settings when it applies to them?

The problem has been verified to exist at least the T420, but we did not test other models yet so I can't tell if it's the spesific model. I think I also didn't test change a single setting, we changed a couple of them at the same time. I'll test this tomorrow, but I don't think that explains the problem either?

Have you tried to update the BIOS to the new version?

http://www-307.IBM.com/PC/support/site.WSS/document.do?sitestyle=Lenovo&lndocid=MIGR-77076

http://www-307.IBM.com/PC/support/site.WSS/document.do?sitestyle=Lenovo&lndocid=MIGR-77071

Release notes:

Version 1.26
UEFI: 1.26 / ECP: 1.08

  • (New) Update ROM Computrace to version 80.895.
  • (Fix) Fixed an issue where some security in the ThinkPad configuration settings could not be changed by script WMI in Windows.
  • (Fix) Fixed a problem where the computer cannot be started from the hard drive with Linux installed if there is no active partition it.
  • (Fix) Fixed a problem where the computer with large installed memory may fail regain normal functioning of the waking state.
  • (Fix) Fixed an issue where a particular adapter may not be detected.

Looks like the second fix in this list could be linked to the problem you are experiencing.

-gan

Tags: ThinkPad Notebooks

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