Restart your computer and press repeatedly at the Dell logo. Enter your current BIOS password.
Disconnect the main internal battery cable from the motherboard immediately to cut all power. dell latitude 5520 bios password reset
For the Dell Latitude 5520, clearing the password by resetting the RTC (Real-Time Clock) requires opening the case and manually manipulating the motherboard jumpers, as simple CMOS battery removal is not sufficient on this model. Restart your computer and press repeatedly at the Dell logo
Enter the wrong password three times until the laptop displays a hash code (e.g., 595B , D35B , 2A7B ). confirm to save changes
Remove the small black plastic cap bridging the two pins.
: Press F10 or Esc , confirm to save changes, and the system will reboot without a password. If You Have Forgotten the Password