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  1. #1
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    Default Clearing the TPM chip?

    Hi guys,

    I'm experiencing the problem some others have of my ThinkVantage security software not wanting to enroll once I've gone back from Vista to XP.

    I've read all of the explanation of what to do to fix this; I'm supposed follow these instructions according to Lenovo:

    To clear the TPM from the BIOS, do the following:

    1. Turn the computer off.
    2. Turn the computer on and press F1 to enter the BIOS setup menu.
    3. From the Security menu, locate the option to clear the security device. Sometimes it is referred to as the TPM or TCG feature.
    4. Save and exit the BIOS setup menu.
    5. Restart Windows and enroll in Client Security Solution.

    The process should complete successfully. Contact Lenovo technical support if the problem persists.


    Fine, no problem. However, when I get into the Security menu, for the life of me, I cannot find the option to clear the device. There is the option to disable the security chip, or make it inactive but visible to the OS, or enabled --there is no option telling me to clear it. I've gone in and cleared the fingerprint database (which doesn't appear to do anything, Windows XP still remembers my fingerprints on next boot), and I've disabled, then reenabled the security chip. I've also updated the Security Center software to the latest 8.1 and made sure I have the latest BIOS for my T61. However, if I leave the Security chip enabled, I still cannot enroll in the security software.

    Interestingly enough, if I disable the security chip, fingerprint reading still works in Windows, the remaining security center software just doesn't run. However, I'd like to reenable the chip, and get this fixed. Does anyone know exactly which option resets the TPM, which menu to go to, and what wording? Maybe I'm just blind --if so, someone please help me see.
    ThinkPad T420, i5-2520M, 16GB, 256GB mSATA MyDigitalSSD (IN TESTING) + 500GB Scorpio Black
    HD+ Display w/Optimus & webcam, Intel 6300, BT, W7 Ent. x64 SP1
    Others owned - T400, R500, T61, T60, Z60m, SL510
    Lenovo mSATA SSD FAQ - A Basic Primer
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  2. #2
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    Default Re: Clearing the TPM chip?

    I think there is a download for this in the T61 download area on Lenovo's website. I recall coming across something with the description of add option to clear TPM cryptography key.

  3. #3
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    Default Re: Clearing the TPM chip?

    Update:

    I found some advice here:

    http://forums.lenovo.com/lnv/board/m...&thread.id=305

    I followed this user's instructions, and was given an option to clear encryption keys in my T61's BIOS under the Security Chip settings. However, I still cannot be enrolled in the Client Security Solution.

    I'm wondering if the key to all of this is my having my system joined to a network domain and that I'm logged in as a domain user. I've given my domain user account local administrator privileges, but that hasn't fixed things either.
    ThinkPad T420, i5-2520M, 16GB, 256GB mSATA MyDigitalSSD (IN TESTING) + 500GB Scorpio Black
    HD+ Display w/Optimus & webcam, Intel 6300, BT, W7 Ent. x64 SP1
    Others owned - T400, R500, T61, T60, Z60m, SL510
    Lenovo mSATA SSD FAQ - A Basic Primer
    MyDigitalSSD 128GB mSATA SSD Review

  4. #4
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    Default Re: Clearing the TPM chip?

    Final post --I went back in, reset the settings to default (F9), and cleared the Security Chip encryption keys -twice. This time, it worked. Don't know why it did this time when it didn't before.

    Close this one out.
    ThinkPad T420, i5-2520M, 16GB, 256GB mSATA MyDigitalSSD (IN TESTING) + 500GB Scorpio Black
    HD+ Display w/Optimus & webcam, Intel 6300, BT, W7 Ent. x64 SP1
    Others owned - T400, R500, T61, T60, Z60m, SL510
    Lenovo mSATA SSD FAQ - A Basic Primer
    MyDigitalSSD 128GB mSATA SSD Review

  5. #5
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    Default Re: Clearing the TPM chip?

    I had the same problem and following the steps below worked fine for me!!!

    1.) Shutdown the computer
    2.) Hold down F1 (while computer is off)
    3.) Continue holding F1 and power on the computer.
    4.) When the boot screen says that's in entering the bios, release the F1 key.
    5.) Go under Security, Security Chip, and Choose to clear the encryption.

  6. #6
    Cranky Bastage
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    Default Re: Clearing the TPM chip?

    Doesn't this kind of defeat the purpose of TPM? I mean, if someone could steal your notebook and just clear the TPM info, what's the point?

    ThinkPad T500 2081-CTO:
    T9400, 4GB DDR3, 15.4" WSXGA+ TFT CCFL with camera, ATI Mobility Radeon 3650 256MB GDDR3, 160GB 7200RPM HDD, Ultrabay Slim DVD R/W, ExpressCard/PC Card, fingerprint reader, AT&T WWAN, Intel WiFi Link 5300, 9-cell battery
    Laptops I've owned in the past:
    HP 6710b | Dell Inspiron 6000D | Toshiba Satellite 5105-S607 | IBM ThinkPad A20m | IBM ThinkPad 570E | IBM ThinkPad 600E | Compaq Armada 1750 | Gateway Solo 2100

  7. #7
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    Default Re: Clearing the TPM chip?

    Quote Originally Posted by Rich.Carpenter View Post
    Doesn't this kind of defeat the purpose of TPM? I mean, if someone could steal your notebook and just clear the TPM info, what's the point?
    That is why you password-protect the BIOS setup so that no-one but you can clear the TPM chip.
    ThinkPad T420, i5-2520M, 16GB, 256GB mSATA MyDigitalSSD (IN TESTING) + 500GB Scorpio Black
    HD+ Display w/Optimus & webcam, Intel 6300, BT, W7 Ent. x64 SP1
    Others owned - T400, R500, T61, T60, Z60m, SL510
    Lenovo mSATA SSD FAQ - A Basic Primer
    MyDigitalSSD 128GB mSATA SSD Review

  8. #8
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    Default Re: Clearing the TPM chip?

    Hello, i got the problem with my Z60m that i can still boot up and enter bios with my fingerprint, but can't resolve the password anymore and if I put the drive in an other laptop, it wants a hard disk password.

    If I clear the TPM chip data, do I automatically remove the hard disk password or do I lock out myself through deleting my fingerprint data?

  9. #9
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    Default Re: Clearing the TPM chip?

    Quote Originally Posted by Takuya View Post
    Hello, i got the problem with my Z60m that i can still boot up and enter bios with my fingerprint, but can't resolve the password anymore and if I put the drive in an other laptop, it wants a hard disk password.

    If I clear the TPM chip data, do I automatically remove the hard disk password or do I lock out myself through deleting my fingerprint data?
    If do that then it would constantly ask for a password, which you don't have.

  10. #10
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    Default Re: Clearing the TPM chip?

    Okey, thats bad.
    Thanks for your answer.

 

 

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