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)
Power down the laptop, unplug all cables, and remove the main battery.
Press and hold the power button for 15–20 seconds to drain any residual static electricity. dell latitude 3380 bios password reset
Locate the small coin-cell (CMOS) battery and disconnect its cable from the motherboard.
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. You must provide proof of ownership (e
Reach out to Dell Technical Support with your Service Tag and the error code displayed after failed password attempts.
If you know the current password but want to remove it for easier access later: Restart and press . Navigate to the Security tab. Select System Password or Admin Password and press Enter. Press and hold the power button for 15–20
Power on your Latitude 3380 and press F2 to enter the BIOS. When prompted for a password, enter an incorrect one 3 times.
Enter the provided "Master Password" into the prompt on your Latitude 3380.