How To Remove Bios Password Hp Elitebook 840 G1 Fixed May 2026

Removing a BIOS password from an HP EliteBook 840 G1 is more complex than on standard consumer laptops because its security is stored in non-volatile memory

Note: This method does not work on all firmware versions; many 840 G1 units will simply lock without showing a code. how to remove bios password hp elitebook 840 g1

Step 1: Turn on the laptop and press F10 repeatedly to enter BIOS Setup. Removing a BIOS password from an HP EliteBook

"I'll need to try a few methods to remove the password," John explained to Emily. "But don't worry, I'll do my best to get you back up and running quickly." Disassemble to the motherboard: The End Step 5:

The Procedure:

  1. Disassemble to the motherboard:

    The End

    Step 5: Reassemble and test

    • Put the jumper back to its original position.
    • Reinstall cover, battery, and AC power.
    • Power on – BIOS password should be gone.
    1. Shut down, remove the AC adapter.
    2. Slide the battery release latch and remove the main battery.
    3. Unscrew the base cover screws (the 840 G1 has 5-6 captive screws—they stay attached to the cover).
    4. Pry off the base cover.
    5. Locate the CMOS battery (a small silver coin cell CR2032 wrapped in yellow tape, connected via a red/black 2-pin JST connector).
    6. Disconnect the CMOS cable from the motherboard (do not pry the cell itself—pull the connector).
    7. Press and hold the power button for 30 seconds to drain residual capacitors.
    8. Leave the CMOS battery disconnected for 1-2 hours (some users leave it overnight).
    9. Reconnect CMOS, reassemble, boot.
    10. If it still asks for a password, the EEPROM retained the data. Proceed to Method 4.

    Method 1: The “System Disabled” Code (The Easiest, but Not Always Possible)

    If you have attempted to enter a password incorrectly multiple times, the laptop may display a “System Disabled” code (e.g., 59912345).