Vital Product Data; Erasing A Lost Or Forgotten Password (Clearing Cmos) - IBM ThinkCentre 2296 Hardware Maintenance Manual

Administrator password control
The Administrator password is set in the IBM Setup Utility program. Refer to
Chapter 5, "IBM Setup Utility program," on page 21.
Operating system password
An operating system password is very similar to a power-on password and denies
access to the computer by an unauthorized user when the password is activated.
The computer is unusable until the password is entered and recognized by the
computer.

Vital product data

Each computer has a unique Vital Product Data (VPD) code stored in the
nonvolatile memory on the system board. After you replace the system board, the
VPD must be updated. To update the VPD, see "Flash update procedures" on page
111.

Erasing a lost or forgotten password (clearing CMOS)

This section applies to lost or forgotten passwords. For more information about
lost or forgotten passwords, see Access IBM on your desktop.
To erase a forgotten password:
10. Replace the cover and connect the power cord. See "Replacing the cover and
110
Hardware Maintenance Manual
Note:
Type 2296, 8191, 8198, 8199, 8316, and 8434 computers have Enhanced Security Mode. If
Enhanced Security mode is enabled and there is no password given, the computer will act
as if Enhanced Security is disabled.
If Enhanced Security is Enabled and an administrator password is given, the administrator
password must be entered to use the computer. If the administrator password is lost or
forgotten, the system board in the computer must be replaced in order to regain access to
the IBM Setup Utility program.
1. Turn off the computer and all attached devices.
2. Remove the cover. See "Removing the cover" on page 32.
3. Locate the Clear CMOS/Recovery jumper on the system board. See
"Identifying parts on the system board (all machine types)" on page 40.
4. If necessary, see "Replacing adapters" on page 41 to remove any adapters that
impede access to the Clear CMOS/Recovery jumper.
5. Move the jumper from the standard position (pins 1 and 2) to the
maintenance or configure position (pins 2 and 3).
6. Replace the cover and connect the power cord. See "Replacing the cover and
connecting the cables" on page 64.
7. Restart the computer, leave it on for approximately 10 seconds. Turn off the
computer by holding the power switch for approximately 5 seconds. The
computer will turn off.
8. Repeat steps 2 through 4 on page 110..
9. Move the jumper back to the standard (pins 1 and 2).
connecting the cables" on page 64.