Do not turn off your computer or disconnect from the power source while updating the BIOS as this could harm your computer. During the update, your computer will restart and you may briefly see a black screen.

Before updating, please read the installation instructions and important information noted below.

Dell XPS 420 System BIOS, A04

AUTO INSTALLED This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
Dimension XPS 420 A04 System BIOS
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Fixes & Enhancements

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Version

A04, A04

Release date

08 Apr 2008

Download Type

System BIOS

Category

BIOS

Importance

Critical
Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and changes to improve functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements.
Available formats

File Format: Flash BIOS executable
File Name: XPS420-A04.EXE
File Size: 676.16 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
To ensure the integrity of your download, please verify the checksum value.
MD5:
d70386ea5eb8c692e1b4d21d51859da9
SHA1:
Not available
SHA-256:
Not available

By downloading, you accept the terms of the Dell Software License Agreement.

Additional details

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Installation Instructions


The file XPS420-A04.EXE is using the Hard Drive format and is designed to be directly executed from Windows environments.




    1. Click Download now.
      The File Download window appears.



    2. Click the Save button.
      The Save As window appears.


    3. Select Desktop using the drop-down menu to the right of Save in.


    4. Click the Save button.
      A progress meter moves as the download is completed.


    5. If necessary, click X in the upper right-hand corner of the Download Progress Window to close it upon completion.








    NOTE:Shut down all other applications prior to running the BIOS update utility. The update utility reboots your system in order to get the new BIOS loaded.





    1. Double click the Icon on your desktop labeled XPS420-A04.EXE.

      The Dell Bios Flash window appears



    2. Click the Continue button.

      The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.


    3. Click the OK button.

      The system will restart and the Bios Flash will be completed.



Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting and usage guide.

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