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 - A12
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Fixes & Enhancements

Update Nvidia VBIOS N13P-GS version [80.07.59.00.0A], N13P-GV version [75.17.46.00.03] to support Hynix A-die.
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Version

A12, A12

Release date

01 Nov 2012

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats

File Format: CPG BIOS Executable for Windows/DOS
File Name: L421XA12W.exe
File Size: 4.55 MB
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. 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:
6657df5baba96d564216b132cfe2e588
SHA1:
69c2c7c2ff5812703c67354de9cdbe88772d88ab
SHA-256:
27a7ddfefb95de5fb1c1af5fd89fcc4d35e72a8df061a80005626f63234ec2ef

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

Additional details

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Windows 7, 32-bit
Windows 7, 64-bit
Windows 8, 64-bit
Dell XPS L421X
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

Need help with BIOS issues?

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

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