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How to Reset Forgotten BIOS Password on Dell Laptop

BIOS or UEFI passwords are stored at the hardware level. If you forget your BIOS or UEFI password, you may not be able to operate your computer or change BIOS settings until you clear the forgotten password. If you wish to recover, reset, or remove a lost or forgotten BIOS from your Dell computer, you have the following options:

How to Use Master Password to Remove BIOS password

Step 1: Restart the computer and tap F2 key during POST to enter System Setup (BIOS). This should prompt for BIOS password. Type the password that you might have set on your computer and press Enter key once.

Enter System Password

Step 2: If unsuccessful, you will prompted with the message 'Invalid Password'. Press Enter key to try again. On three unsuccessful attempts, you will be prompted with the message 'Invalid Password. HDD is Locked'.

Step 3: Make a note of the Service Tag and the Hard-drive S/N mentioned on top of the screen.

Step 4: Contact Dell for Password release code.

Click here to open the Dell Support contact website. Enter your system Service Tag information, and then you will get the master password to clear BIOS password.

Note: The Service Tag will be documented on a small sticker on the bottom, back, or side of your Dell PC. The Service Tag is a 7 digit identifier that is unique to your Dell. The Service Tag is different from the 10 digit Express Service Code.

Step 5: Clearing Password.

Once Dell Support has provided the master password, you will enter this at the prompt and then press Ctrl + Enter to complete the process. The master hard drive password will automatically clear the hard drive password.

Note: If the computer responds with the message Invalid Password, press the Enter key and continue to enter the same password three more times. After the fourth attempt the BIOS should accept the master password, clear the password, and allow access to the hard drive.

How to Temporarily Remove CMOS Battery (Remove the forgotten BIOS password)

All full tower desktop computers use a 3 volt lithium battery, which also used on wrist watches and other small electronic devices. The CMOS battery keeps the time and date, even if the computer is off and unplugged. A CMOS battery usually lasts two to three years. When you remove and replace the CMOS battery, your BIOS will reset. What's more, the BIOS password will be removed.

Here's how to do it on a Dell Latitude laptop:

Step 1: Turn off your PC's power supply and remove all connections.

Step 2: Make sure you're properly grounded to prevent damage to your computer.

Step 3: Open the computer case and lift the battery away from the laptop body.

Step 4: Remove two M2 x 3mm Phillips #0 screws from the base cover.

Remove screws from base cover

Step 5: Slide the base cover down slightly and remove it.

Step 6: Locate the CMOS battery and remove the CMOS battery. On most motherboards, the battery holder lays flat on the board itself and has a small metal tab.

  • Position your spudger on the edge of the white connector between the connector and the port.
  • Pull back on the connector until the plastic head disconnects from the port on the laptop body.
  • Separate the wrapped battery stack from the body by pulling up the wire.

remove the CMOS battery

Step 5: After removing the battery, wait several minutes (at least five minutes), then reattach the battery to your motherboard and turn the computer back on.

Alternatively, you may want to replace it with a new battery, rather than simply reinserting the old one. To install the battery, press it on the battery holder keeping the positive (flat) side facing you.

How to use the jumper to reset the BIOS password on Dell computer

Step 1: Turn off the computer. Unplug the power cable and remove all connections.

Step 2: With your computer still turned off and unplugged, remove your computer's cover.

Step 3: Locate the password jumper on the motherboard, look for the letters PWD, PSWD or PSWDCLR.

Step 4: Choose an option to remove password jumper:

If there are 2 metals pins under the jumper

1. Remove the jumper from the pins, replace the computer cover, reconnect the power cable and monitor and turn on the computer.

2. After the Windows logon screen appears, turn off the computer.

3. Again, disconnect the power cable and monitor.

4. Press and hold the power button for 10 seconds to release static electricity from the system.

5. Remove your computer cover.

6. Replace the jumper in its original position covering the 2 pins. This will re-enable password feature.

7. Replace the computer cover.

8. Reconnect the power cable and other connections and turn on the computer.

Reset BIOS password

If there are 3 pins under the jumper

  • Remembering which two pins are covered, remove the jumper from those pins.
  • Reinstall the jumper in a different position. For example, if you removed the jumper from pins 2 and 3, reinstall the jumper over pins 1 and 2.
  • Replace the computer cover and reconnect the power cable and monitor.
  • Turn on the computer and wait 5 seconds. Then press and hold the Power button until the computer turns off again.
  • Disconnect the power cable and monitor again. Press and hold the Power button for 10 seconds to release static electricity from the system.
  • Replace the jumper over the original 2 pins.
  • Replace the computer cover.
  • Reconnect the power cable and other connections and turn on the computer.

Use password jumper to reset BIOS password