Product Data Sheet / Brochure

Technical Reference
39
Configuration
None
BIOS Recovery Update process if a matching *.bio file is found. Recovery
Update can be cancelled by pressing the Esc key.
If the Recovery Update was cancelled or a matching *.bio file was not
found, a Config Menu will be displayed. The Config Menu consists of the
following (followed by the Power Button Menu selections):
[1] Suppress this menu until the BIOS Security Jumper is
replaced.
[2] Clear BIOS User and Supervisor Passwords.
[3] Reset Intel® AMT to default factory settings.
[4] Clear Trusted Platform Module.
WARNING! Data encrypted with the TPM will no longer be
accessible if the TPM is cleared.
[F2] Intel® Visual BIOS.
[F4] BIOS Recovery.
See Section 5.3.2 Power Button Menu
4.1.1.3 Intel® Management Engine BIOS Extension (Intel®
MEBX) Reset Header
The Intel® MEBX reset header (see Figure 1) allows you to reset the CMOS values to the factory
defaults in situations when the system may have become unresponsive, such as after a failed
BIOS update. It achieves this by placing a low on the reset pin of the Real Time Clock (RTC).
Momentarily shorting pins 1 and 2 with a jumper will accomplish reset CMOS values to default.
CAUTION Always turn off the power and unplug the power cord from the computer before
installing an MEBX reset jumper. The jumper must be removed before reapplying power. The
system must be allowed to reach end of POST before reset is complete. Otherwise, the board could
be damaged.
NOTE After using the MEBX Reset, a “CMOS battery failure” warning will occur during the next
POST. This is expected and does not indicate a component failure.
CAUTION Care must be taken to avoid inadvertent shorting of the bottom cover screw to the
header during bottom cover reassembly. Assemble the bottom cover before reapplying power to
the system.