IBM 8183 - ThinkCentre S50 User Manual

Contents

Erasing a lost or forgotten password (clearing CMOS)This section applies to lost or forgotten passwords. For more information aboutlost or forgotten passwords, go to Access IBM.Note: Some models have a POV daughter card installed on the system board. Inthese models, the password is stored in the EEPROM on the POV card andcannot be erased. See “Identifying parts on the system board” on page 13for the location of the POV card.To erase a forgotten password:1. Refer to “Accessing system board components and drives” on page 12.2. Locate the Clear CMOS/BIOS recovery jumper on the system board. See“Identifying parts on the system board” on page 13.3. Move the jumper from the standard position (pins 1 and 2) to themaintenance or configure position (pins 2 and 3).4. Install the PCI riser and adapters if removed.5. Lower the drive bay assembly and reconnect any cables that weredisconnected.6. Close the cover and connect the power cable. See “Closing the cover andconnecting the cables.”7. Restart the computer, leave it on for approximately 10 seconds, and then turnoff the computer.8. Repeat step 1.9. Move the CMOS/BIOS recovery jumper back to the standard position (pins 1and 2).10. Reassemble the computer and close the cover. See “Closing the cover andconnecting the cables.”Closing the cover and connecting the cablesAfter working with options, you need to install any removed parts, close the cover,and reconnect cables, including telephone lines and power cords. Also, dependingon the option that is installed, you might need to confirm the updated informationin the IBM Setup Utility program.To close the cover and connect cables to your computer:1. Ensure that all components have been reassembled correctly and that no toolsor loose screws are left inside your computer.2. Clear any cables that might impede the replacement of the cover.3. Make sure the drive bay assembly is lowered and that the drive locks are bothin the locked position. Otherwise, you cannot close the cover.4. Close the cover.5. If a cover lock is installed, lock the cover.6. If your computer is being placed in the vertical position, attach the floor stand.Attention: To prevent overheating and possible component damage, alwaysattach the floor stand when placing the computer in the vertical position.7. Reconnect the external cables and power cords to the computer. See “Locatingconnectors on the rear of your computer” on page 9.8. To update the configuration, see Chapter 3, “Using the IBM Setup Utility,” onpage 25.24 User Guide