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 L421X System BIOS
Restart required 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.Dell XPS L421X System BIOS-A11
To view all drivers for your XPS 14 L421X, go to Drivers and downloads.
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L421XA11W.exe | 4.55 MBEnter the Service Tag of your device to check the compatibility of this download with your device.
This is a large file. Depending on your connection speed, it may take some time to download.
File Format:
CPG BIOS Executable for Windows/DOS
File Name:
L421XA11W.exe
File Size:
4.55 MB
Format Description
This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
To ensure the integrity of your download, please verify the checksum value.
MD5:
a4a731a3ec481b61ded32be873b28405
SHA1:
fb1e346b4bc3f5bc0f82bde2cd080227399a1275
SHA-256:
03c3e4a14ec85be3bda3fe11596c4ea2788d792b6b8589ef45bf80af671a1e68
Sign in to Windows as an admin to use automatic scan. If your're already signed in as an admin and seeing this message, please reboot.
Your system is managed by your IT admin and features might be limited.
Find more updates. Use SupportAssist to find all the latest driver updates for your device.
Fixes & Enhancements
This is single BIOS support WIN7 and WIN8.
Enable Secure Flash function. (User can not flash BIOS with un-signed executable file)
Fix NV yellow bang to impact battery life in Win7 OS.
Read More
Enable Secure Flash function. (User can not flash BIOS with un-signed executable file)
Fix NV yellow bang to impact battery life in Win7 OS.
Version
A11, A11
Release date
04 Oct 2012
Download Type
System BIOS
Category
BIOS
Importance
CriticalDell 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.
Supported Operating Systems
Windows 7, 64-bit
Windows 8, 64-bit
Looking for a different OS? View the list of Dell supported operating systems
Applies to
Dell XPS L421X
Installation instructions
1. Download bios file to desktop.
2. Check you've plug AC into your system.
3. Double-click the bios file on the desktop labeled L421XA11W.exe.
4. Click "Yes" to allow the following program.
5. It will extracting and reboot system to flash bios.
* please do not remove the AC power during bios flash.
6. System will restart after bios flash complete.
Reboot will be required
2. Check you've plug AC into your system.
3. Double-click the bios file on the desktop labeled L421XA11W.exe.
4. Click "Yes" to allow the following program.
5. It will extracting and reboot system to flash bios.
* please do not remove the AC power during bios flash.
6. System will restart after bios flash complete.
Reboot will be required
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting and usage guide.Drivers help and tutorials
For more downloads go to the Drivers and downloads.
For help on using the information on this page, please visit Driver Help and Tutorials.