Latitude 5520 Bios Password Reset ((exclusive)): Dell

Sites like bios-pw.org may generate unlock codes based on your 11-character system number [2]. On many Dell systems, you must hold Ctrl and press Enter when submitting these generated codes for them to work [2].

: Turn on the laptop and enter an incorrect password three times. A screen will appear displaying a "System Number" or "Service Tag" followed by a suffix like Get a Recovery Password : Use a separate device to visit a recovery tool like BIOS Master Password Generator Enter the Code dell latitude 5520 bios password reset

For the Dell Latitude 5520, the only non-Dell solution involves generating a master password using a system-specific hash. You will need a (like an Arduino or Raspberry Pi) to sniff the I2C bus between the BIOS chip and the EC (Embedded Controller). Sites like bios-pw