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文章編號: 000131024

How to Reset or Clear the BIOS Password

摘要: This article provides information about how to reset or clear the passwords in the BIOS or UEFI (also called System Setup) of a Dell desktop, laptop, or all-in-one computer. Find information about how to recover a forgotten or lost BIOS password. ...

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文章內容

說明

BIOS is an acronym for Basic Input or Output System, also known as system setup or UEFI. BIOS or UEFI is a firmware that is embedded on a small memory chip on the computer's system board or motherboard. It acts as an interface between the computer's hardware and the operating system. The BIOS or UEFI also contains instructions that the computer uses to perform basic instructions such as date, time, whether to boot from a hard disk drive, USB drive, or the network, and so on.

There are three types of passwords that can be set up in the BIOS or UEFI of a computer.

  1. System or User password - Password that you must enter to log in to the computer. Prevents an unauthorized user from using the computer. Without the user password, a user cannot enter the BIOS, access the one-time boot menu (F12 menu), or boot into the operating system.
  2. Setup or Admin password - Password that you must enter to access and change the BIOS settings of the computer. Prevents an unauthorized user from accessing the BIOS or change the settings in the BIOS.
  3. HDD password - Password that you must enter to allow the BIOS to access the hard drive and continue booting into the operating system. Prevents an unauthorized user from accessing the HDD and booting into the operating system.

For more information about BIOS, how to access the BIOS, and how to update the BIOS to the latest version, see the Dell knowledge base article Dell BIOS Updates.

BIOS or UEFI passwords provide a layer of security for users to prevent unauthorized access to the computer. Follow the instructions in this article to get help to reset the BIOS password.

How to reset or clear the BIOS password

To reset or clear the password that is set inside the BIOS or UEFI of a Dell desktop, all-in-one, or laptop:

NOTE: The previous password is necessary to reset or clear the passwords in the BIOS or UEFI.
  1. Browse to the Dell Manuals website.
  2. Identify your Dell product
    1. Enter the Service Tag, Express Service Code, or the Serial number of the Dell product and click Search.
    2. Or, click Browse all products to manually select your Dell product from the catalog.
  3. Locate the service manual under the Manuals and Documents section.
  4. Click View PDF or View Page next to the service manual of the Dell computer.
  5. Follow the instructions under the Deleting or changing an existing system setup password section.

How to recover a forgotten BIOS password on a Dell laptop

BIOS passwords cannot be recovered. If you have forgotten one of the passwords that is set in the BIOS, contact Dell Technical Support to obtain a password release code. The password release code is based on the unique password prompt that is generated using information from your Dell laptop.

NOTE: Dell technical support requires ownership information about the Dell computer to prevent unauthorized users from obtaining the password release code.

How to recover a forgotten BIOS password on a Dell desktop

BIOS passwords cannot be recovered. If you have forgotten one of the passwords that is set in the BIOS, resetting the CMOS or NVRAM helps reset the BIOS to factory default settings and remove the passwords from the BIOS.

WARNING: Clearing the CMOS or NVRAM using a jumper resets the passwords in the BIOS. This includes the BIOS user password, admin password, and HDD password. Clearing the CMOS or NVRAM will not reset other passwords such as Windows login, online accounts, and so on. Learn How to Perform a BIOS or CMOS Reset and Clear the NVRAM on Dell Computers.
NOTE: The location of the PSWD jumper varies between different Dell desktops. For more information about the location of jumpers, see the documentation of the Dell desktop.
  1. Before you begin, follow the Safety Precautions When Working with Electronic and Electrical Equipment.
  2. Turn off the computer and disconnect the power cable from the computer.
  3. Locate the password reset jumper (PSWD) on the system board.
  4. Remove the jumper plug from the password jumper-pins.
  5. Power on without the jumper plug to clear the password.
  6. Wait until the desktop is loaded and then shut down the computer and replace the jumper plug in its original location.

其他資訊

Recommended Articles

Here are some recommended articles related to this topic that might be of interest to you.

For assistance with Microsoft Windows login password issues, see the Dell knowledge base article Problems with Windows 10 local account password or Microsoft Account.

 

Out of Warranty support Out of warranty? No problem. Browse to the Dell.com/support website and enter your Dell Service Tag and view our offers.

NOTE: Offers are only available for US, Canada, UK, France, Germany, and China personal computer customers. Server and Storage are not applicable.

文章屬性

受影響的產品

Alienware, Inspiron, Legacy Desktop Models, OptiPlex, Vostro, XPS, G Series, G Series, Alienware, Inspiron, Latitude, Vostro, XPS, Legacy Laptop Models, Latitude Tablets, XPS Tablets, Fixed Workstations, Mobile Workstations

上次發佈日期

04 1月 2024

版本

13

文章類型

How To

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