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Table 10-1
Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
memory type
Amount (Size)
Fingerprint reader
512 KB flash
(select products
only)
Questions and answers
1.
How can the BIOS settings be restored (returned to factory settings)?
IMPORTANT:
answer 6 for steps to securely erase data.
Restore defaults does not reset the Custom Secure Boot keys. See question and answer 7 for
information about resetting the keys.
a.
Turn on or restart the computer, and then press
message is displayed at the bottom of the screen.
b.
Select Main, and then select Apply Factory Defaults and Exit.
c.
Follow the on-screen instructions.
d.
Select Main, select Save Changes and Exit, and then follow the on-screen instructions.
2.
What is a UEFI BIOS, and how is it different from a legacy BIOS?
The Unified Extensible Firmware Interface (UEFI) BIOS is an industry-standard software interface
between the platform firmware and an operating system (OS). It is a replacement for the older BIOS
architecture, but supports much of the legacy BIOS functionality.
Like the legacy BIOS, the UEFI BIOS provides an interface to display the system information and
configuration settings and to change the configuration of your computer before an OS is loaded. BIOS
provides a secure run-time environment that supports a Graphic User Interface (GUI). In this
environment, you can use either a pointing device (touch screen, touchpad, pointing stick, or USB
mouse) or the keyboard to navigate and make menu and configuration selections. The UEFI BIOS also
contains basic system diagnostics.
The UEFI BIOS provides functionality beyond that of the legacy BIOS. In addition, the UEFI BIOS works to
initialize the computer's hardware before loading and executing the OS; the run-time environment
allows the loading and execution of software programs from storage devices to provide more
functionality, such as advanced hardware diagnostics (with the ability to display more detailed system
information) and advanced firmware management and recovery software.
HP has provided options in Computer Setup (BIOS) to allow you to run in legacy BIOS, if required by the
operating system. Examples of this requirement would be if you upgrade or downgrade the OS.
3.
Where does the UEFI BIOS reside?
The UEFI BIOS resides on a flash memory chip. A utility must be used to write to the chip.
Does this
Does this
memory
memory
store
retain data
customer
when power
data?
is removed?
Yes
Yes
Restore defaults does not securely erase any data on your hard drive. See question and
What is the
purpose of this
How is data entered into this
memory?
memory?
Stores
Fingerprint reader memory is
fingerprint
programmed by user
templates.
enrollment in HP
ProtectTools Security
Manager.
esc
while the "Press the ESC key for Startup Menu"
How is this memory
write-protected?
upgrade is necessary to
address a unique issue.
Only a digitally signed
application can make the
call to write to the flash.
Questions and answers
85
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