(start on laptop,,,f2,,,bios settings,,,, security,,,password off or disable it,,or default settings),,Remove the main battery then remove backup battery(small flat cell) wait for an hour and re install both batteries then try starting it
Press the "F2" key to enter the BIOS.
Use the arrow keys to highlight the "Load BIOS Defaults" menu option. Select it by pressing "Enter."
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