Driver Details

Latitude E6420 System BIOS A16

Latitude E6420 System BIOS A16

Fixes & Enhancements

1. Addressed long delay before Pre-Windows Login with Full Disk Encryption (FDE) Hard Drives in AHCI mode
2. Addressed IDE-R issue in ATA and AHCI mode.
3. Addressed no external video during POST with some external monitors.
4. Fixed issue where touch panel would fail if you boot through F12 boot menu.
5. Updated to the 75.19.6A.01.01 version of the nVidia VBIOS.


Version A16, A16

Release date

11 Jan 2013

Last Updated

11 Jan 2013



Available formats

File Format:Windows/DOS
File Name:E6420A16.exe
Download Type:HTTP
File Size: 5MB
Format DescriptionThis file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from Windows 8, Windows 7, Windows XP, Windows 2000, NT, Windows 9X, Windows ME or a MS DOS environment.
To ensure the integrity of your download, please verify the checksum value.

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

Other versions

A15,A15 28 Sep 201210:12:42 AM
A14,A14 29 Aug 20125:00:16 PM
A13,A13 11 Jun 20127:35:07 AM
A12,A12 12 Apr 20124:18:35 PM

Supported Operating Systems


Applies to

Dell Latitude E6420/E6420

Installation instructions

Installation Instructions for the Universal (Windows/ DOS) format

1. Download file to Desktop

2. Use one of the methods below to flash the Bios.

Run the BIOS update utility from Windows environment

Run the BIOS update utility from DOS environment (Non-Windows users)

Download file to Desktop

The file E6420A16.exe is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.

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.

Run the BIOS update utility from Windows environment

1. Double click the Icon on your desktop labeled E6420A16.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.

Run the BIOS update utility from DOS environment (Non-Windows users)
NOTE: You will need to provide a bootable DOS DOS USB key. This executable file does not create the DOS system files.

1. Copy the file E6420A16.exe to a bootable DOS USB key.

2. Boot from the floppy to the DOS prompt.

3. Run the file by typing Y:\E6420A16.exe (where y is the drive letter where the executable is located).

Important Information

1. Please note that if the A04 or before A04 BIOS is currently installed on your system,
you must first update to A05 BIOS and then flash to the latest A-rev BIOS.
2. Please note that if the A05 or after A05 BIOS and before A08 is currently installed on your system
you must first update to A08 BIOS and then flash to the latest A-rev BIOS.
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This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details
Dell recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).