Appendix H Statement Of Volatility - HP t730 Troubleshooting Manual

H Statement of Volatility
Thin Client products typically have three types of memory devices namely, RAM, ROM, and Flash memory
devices. Data stored in the RAM memory device will be lost once the power is removed from the device. RAM
devices could be powered by main, aux, or battery power (power states are explained below). Therefore, even
when the unit is not connected to an AC outlet, some of the RAM devices could be powered by battery power.
Data stored in the ROM or Flash memory devices will retain its data even if the power is removed to the
device. Manufacturers of Flash device usually specify a period of time (in the order of 10 years) for data
retention.
Definition of power states:
Main Power: Power available when the unit is turned on.
Aux or Standby power: Power available when the unit is in off state when the power supply is connected to
an active AC outlet.
Battery Power: Power from a coin battery present in the Thin Client systems.
The table below lists the available memory devices and their types per the models. Please note that the Thin
Client systems do not use traditional hard drives with moving parts. Instead, they use flash memory devices
with an IDE/ SATA front end interface. Hence, the operating systems interface with these flash devices similar
to a regular IDE/ SATA hard drive. This IDE/ SATA flash device contains the image of the operating system. The
flash device can only be written by an administrator. A special software tool is required to format the flash
devices and clear the data stored in them.
Please find below a list of steps that should be taken to update BIOS and use it to set the BIOS settings to
factory default settings.
1. Download the latest BIOS for your model off of the HP website.
2. Follow the instructions to flash the BIOS that are found on the website.
3. Restart the system, and while system is powering on (after the HP splash screen, if displayed) press the
F10 key to enter the BIOS setup screen.
4. If the Ownership Tag or Asset Tag is set, manually clear it under Security > System IDs.
5. Select File > Save Changes and Exit.
6. To clear the Setup or Power-On passwords if set, and clear any other settings, power down the computer
and remove the AC power cord and the computer hood.
7. Locate the (blue/green) two pin password jumper on header E49 (labeled PSWD) and remove it.
8. Remove AC power, wait 10 seconds until the unit AC power has drained out, then press the clear CMOS
button. (This is typically a yellow push button, labeled CMOS).
9. Replace the hood and AC power cord and turn the computer on. The passwords are now cleared and all
other user-configurable, non-volatile memory settings are reset to their factory default values.
10. Re-enter the F10 setup utility.
11. Select File > Default Setup > Restore Factory Settings as Default. This will set the default settings
back to the factory defaults.
47