Device Manager: Unknown Device: "Intel(R) 82801GBM (ICH7-M) LPC Interface Controller - 27B9"
- I upgraded my laptop to Vista Ultimate and now have an unknown device in device manager. A google search suggested I am missing a driver for "Amtel TPM" but my laptop does not have a crypto chip. Is this error something to do with ultimate supporting encrypted drives - in which case I can ignore it?
1 person got this answerI do too
Answers
Hi phil_a,
BitLocker is Microsoft's response to a frequent customer request: address these very real threats of data theft or disclosure from lost, stolen or inappropriately decommissioned PC hardware with a tightly integrated solution in the Windows Operating System.
BitLocker prevents a thief who boots another operating system or runs a software hacking tool from breaking Windows Vista file and system protections or performing offline viewing of the files stored on the protected drive.
The feature ideally uses a Trusted Platform Module (TPM 1.2) to protect user data and to ensure that a PC running Windows Vista has not been tampered with while the system was offline. BitLocker provides both mobile and office enterprise information workers with enhanced data protection should their systems be lost or stolen and secure data deletion when it comes time to decommission those assets.
Hence, if you are not using this feature you can ignore it or disable TPM.
Steps for Disabling the TPM:
- Turn on or reboot your computer, during the startup screen, press F2 to go to the BIOS setup menu.
- On the BIOS menu, see, using the arrow keys go to Security settings category, press the <Enter> key. Select TPM Activation and on the right side of the menu select Deactivate. Or select TPM Security, and select Off.
- You have just disabled the TPM hardware on the BIOS, now you save the configuration, by press <ESC> key, choose to Save/Exit, see, then the computer will be restarted.
NOTE: Modifying BIOS/complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.
NOTE: You can also try to Install the driver from the manufacturer’s website.
Hope this information was helpful.
Let me know if this worked.
All the best!
Thanks and Regards,
Uma R - Microsoft Support.
Visit our Microsoft Answers Feedback Forum and let us know what you think.
- Marked As Answer byJason H. - Support EngineerMSFT, ModeratorMonday, November 16, 2009 7:00 PM
All Replies
Hi phil_a,
BitLocker is Microsoft's response to a frequent customer request: address these very real threats of data theft or disclosure from lost, stolen or inappropriately decommissioned PC hardware with a tightly integrated solution in the Windows Operating System.
BitLocker prevents a thief who boots another operating system or runs a software hacking tool from breaking Windows Vista file and system protections or performing offline viewing of the files stored on the protected drive.
The feature ideally uses a Trusted Platform Module (TPM 1.2) to protect user data and to ensure that a PC running Windows Vista has not been tampered with while the system was offline. BitLocker provides both mobile and office enterprise information workers with enhanced data protection should their systems be lost or stolen and secure data deletion when it comes time to decommission those assets.
Hence, if you are not using this feature you can ignore it or disable TPM.
Steps for Disabling the TPM:
- Turn on or reboot your computer, during the startup screen, press F2 to go to the BIOS setup menu.
- On the BIOS menu, see, using the arrow keys go to Security settings category, press the <Enter> key. Select TPM Activation and on the right side of the menu select Deactivate. Or select TPM Security, and select Off.
- You have just disabled the TPM hardware on the BIOS, now you save the configuration, by press <ESC> key, choose to Save/Exit, see, then the computer will be restarted.
NOTE: Modifying BIOS/complementary metal oxide semiconductor (CMOS) settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS/CMOS settings can be solved. Modifications of the settings are at your own risk.
NOTE: You can also try to Install the driver from the manufacturer’s website.
Hope this information was helpful.
Let me know if this worked.
All the best!
Thanks and Regards,
Uma R - Microsoft Support.
Visit our Microsoft Answers Feedback Forum and let us know what you think.
- Marked As Answer byJason H. - Support EngineerMSFT, ModeratorMonday, November 16, 2009 7:00 PM

