HP Z4 Maintenance and Service Guide - Page 105

Questions and answers, Using HP Sure Start

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Questions and answers 1. How can the BIOS settings be restored (returned to factory settings)? 1. Turn on or restart the computer and press F10 as soon as the HP logo appears. 2. Select the Main menu, then select Apply Factory Defaults and Exit. 2. What kind of configuration data is stored on the DIMM Serial Presence Detect (SPD) memory module? How would this data be written? The DIMM SPD memory contains information about the memory module such as size, serial number, data width, speed/timing, voltage, and thermal information. This information is written by the module manufacturer and stored on an EEPROM. There are various third-party tools available to read and write SPD memory. 3. Does the DIMM SPD memory need to be cleared? The DIMM SPD memory will not be modified during standard operation of the workstation system. It will not hold any user data or settings. This NVM memory could potentially be vulnerable due to the fact that it can be modified freely using third-party tools. If there is a possibility that the DIMM SPD region has been tampered with, HP recommends either re-writing the DIMM SPD with third-party tools or destroying the DIMM modules. 4. What information does the NIC EEPROM hold? The only system-specific data that the NIC EEPROM will hold are the system MAC addresses. The other information in the EEPROM is the LAN settings which are not able to be modified outside of the HP factory. The NIC EEPROM will not contain user-settings or data. 5. Does resetting the CMOS configuration memory return the computer back to factory defaults? The process of resetting the CMOS will return certain system settings to factory default but will not reset many of the system data and configuration defaults to their factory settings. To return these system data and configuration defaults to factory settings, refer to question/answer 1 and follow the instructions for returning the BIOS settings to factory defaults. Using HP Sure Start The Generation 4 Z-workstations are configured with HP Sure Start, a technology that continuously monitors the computer's BIOS for attacks or corruption. If the BIOS becomes corrupted or is attacked, HP Sure Start restores the BIOS to its previous safe state, without user-intervention. HP Sure Start is configured and already enabled so that most users can use the HP Sure Start default configuration. The default configuration can be customized by advanced users. Questions and answers 97

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Questions and answers
1.
How can the BIOS settings be restored (returned to factory settings)?
1.
Turn on or restart the computer and press
F10
as soon as the HP logo appears.
2.
Select the
Main
menu, then select
Apply Factory Defaults and Exit
.
2.
What kind of
configuration
data is stored on the DIMM Serial Presence Detect (SPD) memory module?
How would this data be written?
The DIMM SPD memory contains information about the memory module such as size, serial number,
data width, speed/timing, voltage, and thermal information. This information is written by the module
manufacturer and stored on an EEPROM. There are various third-party tools available to read and write
SPD memory.
3.
Does the DIMM SPD memory need to be cleared?
The DIMM SPD memory will not be
modified
during standard operation of the workstation system. It will
not hold any user data or settings. This NVM memory could potentially be vulnerable due to the fact that
it can be
modified
freely using third-party tools. If there is a possibility that the DIMM SPD region has
been tampered with, HP recommends either re-writing the DIMM SPD with third-party tools or
destroying the DIMM modules.
4.
What information does the NIC EEPROM hold?
The only
system-specific
data that the NIC EEPROM will hold are the system MAC addresses. The other
information in the EEPROM is the LAN settings which are not able to be
modified
outside of the HP
factory. The NIC EEPROM will not contain user-settings or data.
5.
Does resetting the CMOS
configuration
memory return the computer back to factory defaults?
The process of resetting the CMOS will return certain system settings to factory default but will not reset
many of the system data and
configuration
defaults to their factory settings. To return these system
data and
configuration
defaults to factory settings, refer to question/answer 1 and follow the
instructions for returning the BIOS settings to factory defaults.
Using HP Sure Start
The Generation 4 Z-workstations are
configured
with HP Sure Start, a technology that continuously monitors
the computer's BIOS for attacks or corruption. If the BIOS becomes corrupted or is attacked, HP Sure Start
restores the BIOS to its previous safe state, without user-intervention. HP Sure Start is
configured
and already
enabled so that most users can use the HP Sure Start default
configuration.
The default
configuration
can be
customized by advanced users.
Questions and answers
97