Disabling Forgotten Password; Disassembly And Reassembly; Front Bezel - Dell Precision 7920 Owner's Manual

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Table 11. System board jumper settings
Jumper
NVRAM_CLR

Disabling forgotten password

The software security features of the system include a system password and a setup password. The password jumper enables or
disables password features and clears any password(s) currently in use.
Prerequisites
CAUTION:
Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by
your warranty. Read and follow the safety instructions that are shipped with your product.
Steps
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover.
3. Move the jumper on the system board jumper from pins 2 and 4 (default) to pins 4 and 6.
4. Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6. However, before
you assign a new system and/or setup password, you must move the jumper back to pins 2 and 4.
If you assign a new system and/or setup password with the jumper on pins 4 and 6, the system disables the new
NOTE:
password(s) the next time it boots.
5. Reconnect the system to its electrical outlet and turn on the system, including any attached peripherals.
6. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
7. Remove the system cover.
8. Move the jumper on the system board jumper from pins 4 and 6 to pins 2 and 4 (default).
9. Install the system cover.
10. Reconnect the system to its electrical outlet and turn on the system, including any attached peripherals.
11. Assign a new system and/or setup password.

Disassembly and reassembly

The following sections contain the procedures for removing and replacing system components.

Front Bezel

Removing the optional front bezel
Steps
1. Locate and remove the bezel key.
28
Disassembly and reassembly
Setting
Description
The BIOS local access security features are unlocked on the
next AC power cycle.
The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.

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