Encrypting Your Data with the TPM (BitLocker)
<TPM security chip equipped models>
<BitLocker supported models>
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Press the ASSIST button while your VAIO computer is off.
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Select Start BIOS setup.
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Press the or key to select the Security tab and change the Change TPM State setting to Enable.
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Press the or key to select Boot and change the External Device Boot setting to Enabled.
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Change the boot device order to put Internal Hard Disk Drive in Boot Priority before External Device.
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Press the or key to select Exit, select Exit Setup, and then press the Enter key.
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When the confirmation prompt appears after your VAIO computer restarts, select Execute.
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Refer to Windows Help and Support to enable BitLocker.
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Save a password on the USB flash drive in the recovery password save window.
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After you update the BIOS settings using VAIO Update, the BIOS settings are restored to the default. In this case, you need to repeat the above steps.
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It takes several hours to complete the BitLocker encryption.
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Do not encrypt an external device containing the recovery password, such as a USB flash drive, using Windows BitLocker Drive Encryption.