HP Z4 Maintenance and Service Guide - Page 103

Recommended steps for clearing user data and custom settings

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Non-volatile memory type Amount (Size) Does this memory store customer data? Does this memory retain data when power is removed? DIMM Serial 512 Bytes per No Yes Presence memory Detect (SPD) module, 128 configuration Bytes data programmabl e System BIOS 32 MBytes Yes Yes ROM What is the purpose of this memory? How is data input into this memory? How is this memory writeprotected? How is this memory reset or cleared? to this ROM in an inappropriate manner can render the computer nonfunctional. Stores memory module information. Programmed by the memory vendor. The memory does not get changed under standard operating conditions. Third-party tools may be used to write to this memory region. Store system BIOS code and computer configuration data. System BIOS code is programmed at the factory. Code is updated when the system BIOS is updated. Configuration data and settings are input using the F10 setup utility or a custom utility. A utility is required for writing data to this memory and is available on the HP website. Writing data to this ROM in an inappropriate manner can render the computer nonfunctional. An F10 menu "Apply Factory Defaults" combined with a "Restore Security Settings To Factory Defaults" will clear any custom user data and settings retained in this memory. Recommended steps for clearing user data and custom settings Following system shutdown and removal of all power sources from an HP Desktop Workstation, personal data can remain on volatile system memory (DIMMs) for a finite period of time and will also remain in nonvolatile memory. The steps below will remove personal data from the Workstation including the nonvolatile memory found in Intel-based boards. Follow steps 1 through 7 below to restore or erase the system board memory that can contain personal data. Restoring or re-programming nonvolatile memory that does not store personal data is neither necessary nor recommended. 1. Enter the F10 Bios Setup menu by powering on the system and pressing F10 as soon as the HP logo appears. If the system has a BIOS administrator password or a DriveLock password, enter the password at the prompt. 2. In the Main menu, select Apply Factory Defaults and Exit. The system will reboot. Upon reboot, custom BIOS settings will be cleared. Recommended steps for clearing user data and custom settings 95

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Non-volatile
memory type
Amount (Size)
Does this
memory store
customer
data?
Does this
memory
retain data
when power
is removed?
What is the
purpose of
this memory?
How is data
input into
this memory?
How is this
memory
write-
protected?
How is this
memory reset
or cleared?
to this ROM in
an
inappropriate
manner can
render the
computer
non-
functional.
DIMM Serial
Presence
Detect (SPD)
configuration
data
512 Bytes per
memory
module, 128
Bytes
programmabl
e
No
Yes
Stores
memory
module
information.
Programmed
by the
memory
vendor.
The memory
does not get
changed
under
standard
operating
conditions.
Third-party
tools may be
used to write
to this
memory
region.
System BIOS
ROM
32 MBytes
Yes
Yes
Store system
BIOS code and
computer
configuration
data.
System BIOS
code is
programmed
at the factory.
Code is
updated when
the system
BIOS is
updated.
Configuration
data and
settings are
input using
the F10 setup
utility or a
custom utility.
A utility is
required for
writing data to
this memory
and is
available on
the
HP website.
Writing data
to this ROM in
an
inappropriate
manner can
render the
computer
non-
functional.
An F10 menu
“Apply Factory
Defaults”
combined
with a
“Restore
Security
Settings To
Factory
Defaults” will
clear any
custom user
data and
settings
retained in
this memory.
Recommended steps for clearing user data and custom settings
Following system shutdown and removal of all power sources from an HP Desktop Workstation, personal data
can remain on volatile system memory (DIMMs) for a
finite
period of time and will also remain in nonvolatile
memory. The steps below will remove personal data from the Workstation including the nonvolatile memory
found in Intel-based boards.
Follow steps 1 through 7 below to restore or erase the system board memory that can contain personal data.
Restoring or re-programming nonvolatile memory that does not store personal data is neither necessary nor
recommended.
1.
Enter the F10 Bios Setup menu by powering on the system and pressing
F10
as soon as the HP logo
appears. If the system has a BIOS administrator password or a DriveLock password, enter the password
at the prompt.
2.
In the
Main
menu, select
Apply Factory Defaults and Exit
. The system will reboot. Upon reboot, custom
BIOS settings will be cleared.
Recommended steps for clearing user data and custom settings
95