Support in other languages: 
Showing results for 
Search instead for 
Do you mean 

Welcome to the Forums!

Welcome to Lenovo's Discussion Community!
Please note our guidelines. How to register and login andCommunity FAQs

Help Lenovo Shape the Future of PCs

Take the ownership survey. Share your ideas with our product team

Visit the Lenovo Blogs!

visit the blogCheck out the ThinkPad Time Machine

Configuring TPM to run in between Windows 8 -- Thinkpad General

Click ►
Started ‎02-20-2012 by
Modified ‎02-20-2012 by

Configuring TPM to run in between Windows 8 -- Thinkpad General


Consider the following scenario where you try to install Windows 8 in a dual boot setting with Windows 7(With TPM enabled) .You may encounter with the follwing error message in the event log.


Title: BitLocker Drive Encryption

Headline: BitLocker could not be enabled.

Message: The BitLocker encryption key cannot be obtained from the Trusted Platform Module (TPM). C: was not encrypted.


In the System event log, you may see  the following events logged for this problem from BitLocker-Driver:


Event ID 24636: Bootmgr failed to obtain the BitLocker volume master key from the TPM.

Event ID 24641: An unexpected error was encountered attempting to retrieve the BitLocker volume master key during restart.



Event ID 24609: A key was not available from required sources during restart.



Thinkpad X220's running Preloaded Windows 7 with TPM enabled