07-17-2018 05:44 AM
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Do not try to remove the battery or CMOS as it may endanger the system password entirely. Before any attempts back up your files first (take note of the reference about passwords in the hardware manual page 24).
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"Type the current master hard disk password in the Enter Current Password field. Then, leave the Enter New Password field blank, and press Enter twice.Press F10 to save changes and exit."