Dell laptops generally do not have physical jumpers for security reasons. Instead, they use a challenge-response system.
Refer to your specific model's service manual on the Dell Support website to find the jumper labeled "PSWD" or "PASSWORD".
Dell has warned about unauthorized tools that exploit vulnerabilities in select BIOS versions, such as those using the InsydeH2O framework. dell bios password reset tool download
Be cautious of downloadable ".exe" files claiming to be "master password generators."
Dell provides different recovery paths based on whether you are using a desktop or a laptop. Desktop Recovery (Jumper Method) Dell laptops generally do not have physical jumpers
Turn off and unplug the computer. Remove the jumper plug, power on the system briefly to clear the memory, then power off and replace the jumper. Laptop Recovery (Release Code Method)
The site generates a "Master Password" based on your serial number. Dell has warned about unauthorized tools that exploit
Enter a wrong password 3-5 times until a system disabled screen appears with an alphanumeric "System Number" or "Service Tag".
Most Dell desktops feature a physical "password jumper" on the motherboard that can clear BIOS settings.
Dell will provide a unique release code. Enter this at the prompt and press Ctrl + Enter to unlock the BIOS. 2. Using Community Tools (BIOS-PW)