Toshiba Tecra A8 PTA83C-KF401F Users Manual Canada; English - Page 157
Execute-Disable Bit Capability, Security controller, Enhanced C-States, Clear TPM Owner
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HW Setup Enhanced C-States This feature enables or disables the Enhanced C-States. Enabled Disabled This lowers the power consumption. This does not lower the power consumption. Execute-Disable Bit Capability This setting, which is displayed on the first page of the setup screen, configures the Execute-Disable Bit function of the CPU. This function is specific to Intel® processors and, when activated, helps to reduce security threats to the computer by preventing certain classes of malicious 'buffer overflow' attacks when combined with a supporting operating system such as Windows XP. Available Makes the processor's Execute-Disable Bit Capability available for use. Not Available Disables the processor's Execute-Disable Bit Capability so that it is not available for use. (Default). System configuration changes, other than changes to this setting, should be made within Windows by using applications such as TOSHIBA HW Setup, TOSHIBA Password Utility, TOSHIBA Power Saver, Windows Device Manager and so forth. Security controller The security controller settings are available in SYSTEM SETUP (2/2). TPM This setting enables or disables the security controller known as TPM (Trusted Platform Module). Enabled Enables the TPM. Disabled Disables the TPM (Default). Clear TPM Owner This setting is used to erase the data in TPM when disposing of the computer or when the owner of the computer changes, etc. Once this operation is carried out, the TPM configuration settings are erased, such that the encrypted data can no longer be decrypted and the files can no longer be read. Please backup or delete the data as necessary before carrying out this operation. User's Manual 7-11