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TPM not found or no save option is available for BitLocker group policy settings

Symptoms

 

  • With a computer without a TPM1.2 compliant security chip, when you run BitLocker, a warning message will be displayed "A TPM was not found. A TPM is required to turn on BitLocker. If your computer has a TPM, then contact the computer manufacturer for BitLocker-compatible BIOS."
  • With a computer with a TPM1.2 compliant security chip, when you run BitLocker, there is no screen to save "Startup key" in the USB drive in the wizard.

 

Diagnosis

Systems that support BitLocker Drive Encryption with either TPM 1.2 or USB 2.0 flash drive and are running Windows Vista:

  • ThinkPad R60
  • ThinkPad T60, T60p
  • ThinkPad X60, X60s, X60 Tablet
  • ThinkPad Z61m, Z61p, Z61t

Systems that support BitLocker Drive Encryption without TPM 1.2, only with USB 2.0 flash drive

  • ThinkPad G50
  • ThinkPad R51e, R52 (with Machine Type: 1846, 1847, 1848, 1849, 1850, 1870), R60e
  • ThinkPad T43 (with Machine Type: 2668, 2669, 2678, 2679, 2686, 2687), T43p, T60, T60p
  • ThinkPad X41, X41 Tablet
  • ThinkPad Z60m, Z60t, Z61e
  • 3000 C200, N100, V100

Solution

You must must enable the BitLocker group policy setting for the Control Panel Advanced Startup Options by running gpedit.msc. Refer to theBitLocker step-by-step guide.

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