Dell Computers

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If you have a Dell computer, either a laptop or a desktop, the password can be calculated but you need to find your service tag. This service tag is usually displayed on the screen of the locked out Dell computer.

Dell BIOS Service Tags

The BIOS service tags for Dell computers have the pattern of 7 characters with a 4-character suffix. Example of service tag for a Dell BIOS:

  • QZ6X56H-595B
  • 1234567-D35B
  • 2345678-A95B
  • 5678901-2A7B

Where can I locate such code? Simply enter a wrong password in the BIOS login prompt, make three (3) failed login attempts and you shall see the lock code and the service tag of your Dell computer.

Dell Hard Disk Drive (HDD) Service Tags

The service tags for Dell HDD have the pattern of 11 characters with a 4-character suffix. In older or newer Dell system, the codes are padded from the left with asterisks ** or *** then followed by 9 or 8 characters and a 4-character suffix. Examples:

  • C33H3C1716B-2A7B
  • **0DFF3339H-595B
  • ***245H0AB7-2A7B
  • 1109467C0AH-D35B

NOTE: The following Service Tags are NOT supported: -1D3B, -1F5A, -1F66, -3A5B

Get your BIOS password below
Required Information
Enter the service tag here. It can be 7-character code with a 4-character suffix or 11-character code with a 4-character suffix. For alphanumeric codes, make sure that you do not interchange 1 with l or 0 with O.
Enter a valid e-mail address that you have access to. We will send the master password and all unlocking procedures in this email address. We will also contact you should you face problems unlocking the BIOS or HDD password. A valid email address is in the form
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