58 Keysight M9037A PXIe Embedded Controller User Guide
Controller Maintenance BIOS Setup
Restoring Defaults
Default settings can be recovered by any of the following three processes:
- Execute a Clear CMOS (see “Clear CMOS” on page 60). This clears more data
than Restore Defaults alone.
- Entering the BIOS Setup Utility then navigate to the Save & Exit tab, select
Restore Defaults.
- Entering the BIOS Setup Utility then navigate to the Save & Exit tab then
restore user defaults by selecting the Restore User Defaults field.
The first two processes result in the same factory default settings being restored.
The Clear CMOS is used when the System or the Setup Utility cannot be entered
because either the Administrator BIOS Password and/or the User BIOS Password
is set and unknown. If the Setup Utility can be entered then use the Restore
Default field to set all fields back to their default values and clear both BIOS
passwords.
Restore Using Clear CMOS To clear the CMOS RAM, i.e., change the BIOS
settings back to the Factory Default Setting, the chassis must be powered down
and the M9037A must be removed. See “Clear CMOS” on page 60.
Restore Using the Setup Utility To restore the Factory BIOS settings then use
the Setup Utility navigate to Save & Exit tab Restore Defaults field and press
enter then do a save. The BIOS passwords will be cleared, the BIOS settings will
return to their factory values. The User Default Values will NOT be cleared
including any BIOS passwords stored with these values.
Difference between ClearCMOS and Restore Defaults
Both of these methods set the BIOS values to their factory settings. This includes
clearing both the Administrator BIOS Password and the User BIOS Password. The
ClearCMOS should be used when one or both Administrator and User BIOS
Passwords are unknown, or when Restore Defaults does not work. If the
ClearCMOS is used then the clock must manually be set to the correct date/time.
Restore the User Default Values
To restore the User Default Values use the BIOS Setup Utility then navigate to
Save & Exit tab, select the Restore User Defaults field, press <Enter> then do a save.
The BIOS passwords will be the values that were stored, the BIOS settings will
set to their User Default values.
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