: To remove the password, enter the current password, then leave the "New Password" and "Confirm Password" fields completely blank.
On modern laptops like the 5520, removing the CMOS battery might only reset the system clock and NVRAM settings, but it is often the first troubleshooting step for clearing basic BIOS hangs. How to Reset, Remove, or Recover BIOS Passwords | Dell US dell latitude 5520 bios password reset
: Hold Ctrl and then press Enter to submit the master password. 3. Hardware Reset: CMOS Battery Method : To remove the password, enter the current