IBM 9228 Service Guide - Page 163

Erasing a lost or forgotten password (clearing CMOS), User's Guide, IntelliStation Documentation

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Erasing a lost or forgotten password (clearing CMOS) If the power-on or administrator password is lost or forgotten, you can regain access to the computer through one of the following methods: v If you have forgotten the power-on password and an administrator password is set, type the administrator password at the power-on prompt; then, start the Configuration/Setup Utility program and change the power-on password (see the User's Guide on the IBM IntelliStation Documentation CD for more information). v Remove the battery and then reinstall the battery (see "Removing the battery" on page 45 and "Installing the battery" on page 45). v Clear CMOS settings by changing the position of the CMOS recovery jumper (J9). The following llustration shows the location of the Clear CMOS jumper. Boot block jumper (J22) BIOS recovery jumper (J80) BUS width jumper (J11) Clear CMOS jumper (J9) BUS width jumper (J10) To set the CMOS recovery jumper and erase a forgotten password, complete the following steps: 1. Read the safety information that begins on page vii and "Handling static-sensitive devices" on page 30. 2. Turn off the computer and all attached devices. 3. Disconnect the power cord. 4. Remove the cover. 5. Locate the CMOS recovery jumper (J9) on the system board (see Figure 63 on page 140), and remove any adapters that impede access to the jumper. 6. Move the CMOS recovery jumper from pins 1 and 2 to pins 2 and 3. 7. Wait 60 seconds; then, return the CMOS recovery jumper to pins 1 and 2. 8. Replace any adapters that were removed; then, replace the cover. 9. Connect the computer to a power source, keyboard, monitor, and mouse. Chapter 5. Diagnostics 145

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Erasing a lost or forgotten password (clearing CMOS)
If the power-on or administrator password is lost or forgotten, you can regain
access to the computer through one of the following methods:
v
If you have forgotten the power-on password and an administrator password is
set, type the administrator password at the power-on prompt; then, start the
Configuration/Setup Utility program and change the power-on password (see the
User’s Guide
on the IBM
IntelliStation Documentation
CD for more information).
v
Remove the battery and then reinstall the battery (see “Removing the battery” on
page 45 and “Installing the battery” on page 45).
v
Clear CMOS settings by changing the position of the CMOS recovery jumper
(J9). The following llustration shows the location of the Clear CMOS jumper.
Boot block
jumper (J22)
Clear CMOS jumper (J9)
BUS width jumper (J11)
BUS width jumper (J10)
BIOS recovery
jumper (J80)
To set the CMOS recovery jumper and erase a forgotten password, complete the
following steps:
1.
Read the safety information that begins on page vii and “Handling
static-sensitive devices” on page 30.
2.
Turn off the computer and all attached devices.
3.
Disconnect the power cord.
4.
Remove the cover.
5.
Locate the CMOS recovery jumper (J9) on the system board (see Figure 63 on
page 140), and remove any adapters that impede access to the jumper.
6.
Move the CMOS recovery jumper from pins 1 and 2 to pins 2 and 3.
7.
Wait 60 seconds; then, return the CMOS recovery jumper to pins 1 and 2.
8.
Replace any adapters that were removed; then, replace the cover.
9.
Connect the computer to a power source, keyboard, monitor, and mouse.
Chapter 5. Diagnostics
145