If it’s your personal laptop and you’re stuck, option #2 (shorting the pads) is your best bet. There are YouTube videos specifically for the "Latitude 7480 password reset" that show you exactly which pads to short.
This guide is intended for users who have forgotten their own administrator password or need to reset a legitimate work device. Bypassing security on a stolen or unauthorized laptop is illegal. Title: How to Reset the BIOS Password on a Dell Latitude 7480 (Forgot Admin Password) how to reset bios password dell latitude 7480
I recently had to tackle a forgotten BIOS supervisor password on a Dell Latitude 7480. If you’re stuck with a System Disabled message or a password prompt before boot, here’s what actually works. If it’s your personal laptop and you’re stuck,
This model uses a chipset-level password stored on the motherboard’s PCH (Platform Controller Hub). Removing the CMOS battery or shorting pins will NOT work on this laptop. You need a different approach. Bypassing security on a stolen or unauthorized laptop