Older laptops allowed you to remove the CMOS battery to wipe the password. The Latitude 5520 stores passwords in . Removing the battery usually fails.
The time and date reset, but the BIOS password likely remains.
If your BIOS is locked by a company (Enterprise/IT managed), hardware-level security might prevent local resets, and you may need to contact your organization's IT department. AI responses may include mistakes. Learn more
If the laptop asks for a password before Windows loads (Pre-boot Authentication), CCTK will not work. You need hardware access.
: Sites like bios-pw.org allow you to enter your Service Tag and hash to generate a master password for free.
Laptops like the 5520 do not have physical "password jumpers". If you are locked out, use one of these methods: Official Dell Support (Recommended):