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Table 10-1
Troubleshooting steps for nonvolatile memory usage (continued)
Nonvolatile
memory type
802.11 WLAN
EEPROM
Camera (select
products only)
Fingerprint
reader (select
products only)
Questions and answers
Use this section to answer your questions about nonvolatile memory.
1.
How can the BIOS settings be restored (returned to factory settings)?
IMPORTANT:
See question and answer 6 for steps to securely erase information.
The restore defaults feature 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 quickly press esc.
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 replaces the older BIOS architecture but supports
much of the legacy BIOS functionality.
Amount (Size)
Does this
memory
store
customer
data?
4 kilobits to 8
No
kilobits
64 kilobits
No
512 KB flash
Yes
The restore defaults feature does not securely erase any information on your hard drive.
Does this
What is the
memory
purpose of
retain data
this memory?
when
power is
removed?
Yes
Stores
configuration
and
calibration
data.
Yes
Stores
camera
configuration
and firmware.
Yes
Stores
fingerprint
templates.
How is data entered into
How is this memory
this memory?
write-protected?
802.11 WLAN EEPROM
A utility must be used
is programmed at the
for writing data to
factory. Tools for writing
this memory and is
data to this memory are
typically not made
not made public.
available to the public
unless a firmware
upgrade is necessary
to address a unique
issue.
Camera memory is
A utility must be used
programmed using a
for writing data to
utility from the device
this memory and is
manufacturer that can be
typically not made
run from Windows.
available to the public
unless a firmware
upgrade is necessary
to address a unique
issue.
Fingerprint reader
Only a digitally signed
memory is programmed
application can make
by user enrollment in
the call to write to the
HP ProtectTools Security
flash.
Manager.
Questions and answers
77
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