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Forcing a BIOS Update without the AC adapter that is attached on a Dell Laptop

Summary: This page describes how to Update the BIOS on a laptop without the AC adapter attached.

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Article Content


Symptoms

Force flash the BIOS

Duration: 02:16
Closed captions: English only



Forcing a BIOS flash without the AC adapter connected

There are cases where you must update the system BIOS on a laptop when the AC Adapter cannot be determined or is not available. When you attempt to update the BIOS within Windows, the update program detects if the AC adapter is present or not and will not continue until it is plugged in. If you must flash a BIOS and the AC adapter is nonfunctional or unavailable, there is a way for force the flash.

 
CAUTION: If the battery charge is less than 10%, you may be able to force the BIOS to update from within a DOS environment. A failure during this process may result in your computer becoming unusable and users must proceed at their own risk. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit, or loss of revenue, which customers may incur by following any procedure or advice set out in this article.

What You Should Do:

  1. Download the relevant, or latest BIOS update file from Dell's drivers home page.

  2. Save it in an easily accessible location from a command prompt. (C: drive or root directory would be the easiest)

  3. Click Start. In the Run or Search box, type cmd, and then right-click "cmd.exe" in the search results, and select Run as administrator.

  4. If the User Access Control window appears, select Yes

  5. In the Command Prompt window, at the C:\Windows\system32> prompt, type in cd\ and press Enter this will return you to the root directory.

  6. At the C:\> prompt, type biosflashname.exe /forceit and press Enter.

    NOTE: biosflashname is the actual name of the BIOS you downloaded, for example, A6540A09.exe and there is also a space between that and the /forceit switch)
  7. After answering YES to the User Access control prompt, the update should commence without the AC adapter warning. Reboot when prompted to complete the update.

Cause

NOTE: For information regarding the updating of your system BIOS, see the KB article:

Resolution


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, China, and Japan personal computer customers. Server and Storage not applicable.

Article Properties


Affected Product

Inspiron, Latitude, Vostro, XPS

Last Published Date

21 Jul 2021

Version

10

Article Type

Solution

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