Hard drive passwords are stored in the BIOS of a computer and can be cleared by draining the system board of all power. Without power, the BIOS memory on the system board cannot store settings, which forces a reset of the hard drive password. To prevent loss of BIOS settings during a power outage, your Dell Latitude D600 has a reserve battery that supplies power to the system board and must be disconnected to reset the password.
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Shut down your computer and unplug the AC adaptor and all peripherals from the computer.
Remove any batteries installed in the laptop's battery bays. Close your laptop's display and turn the computer upside down.
Examine the main battery bay for a small latch near the front edge of the computer. Depress the latch to open a small compartment.
Pull the reserve battery out of the compartment and disconnect the reserve battery cable from the socket. Let your laptop sit for 30 to 60 minutes without any source of power to make sure that all power is drained from the system board.
Plug the reserve battery cable into the socket and replace the reserve battery in its compartment. Close the reserve battery compartment and turn your laptop over.
Plug the AC adaptor into your laptop and turn the computer on. The hard drive password will be cleared.
Tips and warnings
- Make sure you let the laptop sit without power for at least 30 minutes. The system board stores a small power reserve in its capacitors and needs to fully drain its reserve for the password to clear.
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