IBM IntelliStation M Pro 6233, Hardware Maintenance Manual

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Erasing a lost or forgotten password (clearing CMOS)
This section describes how to erase lost or forgotten passwords. For more
information about lost or forgotten passwords, refer to Access IBM on the desktop.
To erase a forgotten password, follow these steps:
1. Turn off the computer and all attached devices.
2. Unplug the power cord.
3. Remove the cover. See “Removing the cover and front bezel” on page 47.
4. See the illustration below for the CMOS jumper location.
CMOS jumper
5. Move the jumper from the standard position on pins 1 and 2 to the
maintenance, or configure position (pins 2 and 3).
6. Replace the cover and connect the power cords. See “Removing the cover
and front bezel” on page 47 and “Replacing the cover and connecting the
cables” on page 65.
7. After you restart the computer, the BIOS Setup Utility screen displays.
8. In the Maintenance screen, you can clear CMOS settings.
9. Press Esc .
10. Select Exit from the menu.
11. Select Exit Saving Changes .
12. Follow the instructions on the screen.
Note: You must remove the cover again to place the jumper to the normal setting.
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Hardware Maintenance Manual: IBM IntelliStation M Pro Type 6233 and 6850