This message relates to clearing the Real Time Clock (RTC) CMOS memory that contains computer
configuration data.
6. How can the BIOS security be reset to factory defaults and erase the data?
IMPORTANT: Resetting results in the loss of information.
These steps do not reset Custom Secure Boot Keys. See question and answer 7 for information
about resetting the keys.
a. Turn on or restart the computer, and then quickly press esc.
b. Select Main, and then select Reset Security to Factory Defaults.
c. Follow the on-screen instructions.
d. Select Main, select Save Changes and Exit, and then follow the on-screen instructions.
7. How can the Custom Secure Boot Keys be reset?
Secure Boot is a feature to ensure that only authenticated code can start on a platform. If you
enabled Secure Boot and created Custom Secure Boot Keys, disabling Secure Boot does not clear
the keys. You must also select to clear the Custom Secure Boot Keys. Use the same Secure Boot
access procedure that you used to create the Custom Secure Boot Keys, but select to clear or
delete all Secure Boot Keys.
a. Turn on or restart the computer, and then quickly press esc.
b. Select the Security menu, select Secure Boot Configuration, and then follow the on-screen
instructions.
c. At the Secure Boot Configuration window, select Secure Boot, select Clear Secure Boot Keys,
and then follow the on-screen instructions to continue.
Using HP Sure Start (select products only)
Select computer models are configured with HP Sure Start, a technology that continuously monitors
your computer's BIOS for attacks or corruption.
If the BIOS becomes corrupted or is attacked, HP Sure Start restores the BIOS to its previously safe
state, without user intervention. Those select computer models ship with HP Sure Start configured and
enabled. HP Sure Start is configured and already enabled so that most users can use the HP Sure Start
default configuration. Advanced users can customize the default configuration.
To access the latest documentation on HP Sure Start, go to http://www.hp.com/support.
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Chapter 10 Statement of memory volatility
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