You can set a password for the BIOS on the Hewlett Packard Omnibook 6100 to protect BIOS settings from unauthorised changes. If you set your BIOS password accidentally or set it long ago and forgot it, you can reset the BIOS, removing the password and any setting changes. To do this you must partially take the Omnibook 6100 apart and remove the CMOS battery, allowing the motherboard to power-cycle and reset.
- Skill level:
- Moderately Challenging
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Things you need
- Flathead screwdriver
- Phillips screwdriver
Turn off your Omnibook 6100 and unplug the charger. Turn the laptop over and slide the battery release latch to the right. Hold the release latch in place and pull up on the battery to remove it.
Turn the Omnibook 6100 back over and open the display. Insert the tip of a flathead screwdriver between the laptop and the power button panel, located directly above the keyboard. Pry the panel away from the laptop case and work your way around until you can completely remove the power button panel. Set it aside.
Remove the four screws beneath the power button panel using a small Phillips screwdriver.
Shut the display and turn the laptop over. Remove all screws that have a "K" symbol next to them using a small Phillips screwdriver.
Flip the laptop and open the display. Pull up on the top of the laptop, and then slide the bottom tabs out from beneath the palm rest. Lay the keyboard facedown on the palm rest.
Disconnect both the thin cable (pointing stick flex cable) and the thick ribbon cable (keyboard flex cable) from the motherboard. Remove the Omnibook 6100 keyboard.
Locate the opening on the right side of the metal silver heatsink, directly beneath the keyboard. Reach through the opening and disconnect the heatsink fan cable from the motherboard.
Remove the five screws securing the heatsink to the computer and lift it out of the Omnibook 6100. Set the heatsink aside.
Locate the CMOS battery beneath the heatsink. This is a flat, round battery approximately the size of a nickel. Remove the CMOS battery, noting which side (positive or negative) was facing up when you removed it. Wait for 30 minutes. This allows the unit to power cycle and reset the BIOS, also resetting the BIOS password.
Reinstall the CMOS battery and reassemble the Omnibook, following the tear-down instructions in reverse.
Tips and warnings
- Do not touch other portions of the motherboard. Some components of the motherboard retain a charge, even when unplugged.
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