The latest security function is loaded for TPM, but it does not guarantee a complete protection of data and hardware. Precautions for management of data that uses TPM Please refer to the following Related Q&A on how to setup password. In order to enable the TPM setting in BIOS setup menu setting, make sure to setup BIOS password and power on password using BIOS function, so that it cannot be changed by a third party. If you still have encrypted data left, backup the data as needed, and then disable the setting. 
If you have disabled TPM setting or performed initialization (Clear) in BIOS setup menu setting, you will not be able to access again to encrypted data that are encrypted by BitLocker drive encrypting or encrypting of device. Please enter it from the main body’s keyboard. Bitlocker’s recovery key cannot be entered from the touch panel’s on-screen keyboard. On the Exit menu, press the Down Arrow key until the desired exit option is highlighted, and then press the Enter key. 
Once all the desired changes have been made, press the ESC key until the Exit menu is displayed. IMPORTANT: To reset the computer BIOS to the original default values, press the F9 key and then save the changes and exit. In the Setup Utility screen, use the Arrow keys to navigate through the various setup screens and options, use the Enter key to select different screens and options, and use the ESC key to exit the different screens or options. 
At the VAIOCare | Rescue Mode screen, use the Arrow keys to highlight the Start BIOS setup option, and then press the Enter key.Refer to the operating instructions supplied with the computer for the exact location of the Assist button on your model. With the computer turned completely off, press and hold the Assist button until the black VAIO screen appears.NOTE: The location of the Assist button will be different depending on the computer model.For instance, if you set a Machine Password and later forget that password, it will require advanced technical support and possibly service to regain access to the computer. WARNING: Other than resetting the BIOS to the default values, making changes to the BIOS is an advanced procedure that can produce unintended results if not done properly. How to access the Bios of a Sony Vaio Laptop, computer, Bios of a Sony Vaio Laptopįollow these steps to access the BIOS on a VAIO® computer.
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