Reach out to Dell Technical Support with your Service Tag and the error code displayed after failed password attempts.
Locate the small coin-cell (CMOS) battery and disconnect its cable from the motherboard. dell latitude 3380 bios password reset
Power on your Latitude 3380 and press F2 to enter the BIOS. When prompted for a password, enter an incorrect one 3 times. Reach out to Dell Technical Support with your
Power down the laptop, unplug all cables, and remove the main battery. When prompted for a password, enter an incorrect one 3 times
Use a secondary device to visit a reputable recovery site like bios-pw.org . Enter your 11-character alphanumeric system number exactly as it appears.
Reconnect the CMOS battery, main battery, and cover. Power on the system; the BIOS may now be reset to factory defaults. Method 4: Removing a Known Password
You must provide proof of ownership (e.g., the original invoice). Once verified, they will issue a unique unlock code. Method 3: Hardware Reset (CMOS Battery)