Clearing The Cmos; Recovering The Bios - HP CL2100 G3 807S User And Maintenance Manual

If [/E] is present alone, only the embedded controller block needs to be updated.
o
Flash Command
afudos XXXX.ROM /P
afudos XXXX.ROM /P /B
afudos XXXX.ROM /P /B /N
afudos XXXX.ROM /P /B /R
Clearing the BIOS password
If the user and/or administrator password is lost or forgotten, clear both passwords by moving the
password clear jumper into the clear position.
The BIOS determines if the password clear jumper is in the clear position during BIOS POST and clears
any passwords if necessary. The password clear jumper must be restored to its original position for the
new password to remain set.

Clearing the CMOS

The CMOS clear jumper uses RTCRST# to:

Clear CMOS values

Set the RTC power well configuration bits to default.
To compatible legacy BIOS for user who is used to use legacy BIOS, BIOS provide the function to restore
the default settings of BIOS Setup when CMOS is cleared, even though UEFI BIOS store BIOS settings to
NVRAM.
There are two methods to clear the CMOS:

Clear the CMOS jumper.

Remove the CMOS battery when the system is in AC OFF status.
Important: After clearing the CMOS, the BIOS setup default is restored, but the password that was set by
the user is still reserved.

Recovering the BIOS

If the BIOS image is corrupt, a system BIOS update fails, or the system fails to complete POST, the BIOS
must enter recovery mode. In recovery mode, an entire BIOS image can be refreshed to BIOS flash part.
To recover the BIOS:
Turn off the system power.
1.
Open the chassis.
2.
Move the BIOS recovery jumper from the normal positions 1-2 to the recovery positions 2-3.
3.
Close the chassis.
4.
Copy the latest BIOS image file (DC1F1XXX.ROM) to a USB drive, XXX is the revision number. A
5.
bootable USB is not required.
Insert the USB drive into the system.
6.
Power up the system.
7.
The system display setup <Recovery> screen displays automatically and flash update automatically
8.
runs.
Description
Program main BIOS image
Program main BIOS and BB (Boot Block)
Program main BIOS, BB and NVRAM
Program BB and main BIOS without SMBIOS
Configuration 56