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,SW,BIOS,LAT,E5420,A07,A07
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.E5420 BIOS A07
To view all drivers for your Latitude E5420, go to Drivers and downloads.
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E5420A07.exe | 2.82 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:
E5420A07.exe
File Size:
2.82 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:
0b4e23477f203eb5ae7e22526c3edc56
SHA1:
1d7ea3fc90bf6b7aa342e99a6a51a3ff8555b94d
SHA-256:
Not available
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
Fixes/Enhancements
------------------
Defects Fixed:
1. Fix MSR consistency error.
2. Address some Wireless KB/Mouse can not work in BIOS.
3. Integrate MEFW 7.1.40.1161 Production Version.
4. Addressed boot order change issue.
5. Clear option for TPM in BIOS Setup is invalid w/ TPM set to be ON/Deactive
6. Fix USB handoff sequence broken
7. Fix Sometimes USB mouse hang in BIOS setup.
8. Load Defaults will no longer change the TPM settings.
9 Do not perform certain TPM measurement on S3 resume to reduce resume time.
Read More
------------------
Defects Fixed:
1. Fix MSR consistency error.
2. Address some Wireless KB/Mouse can not work in BIOS.
3. Integrate MEFW 7.1.40.1161 Production Version.
4. Addressed boot order change issue.
5. Clear option for TPM in BIOS Setup is invalid w/ TPM set to be ON/Deactive
6. Fix USB handoff sequence broken
7. Fix Sometimes USB mouse hang in BIOS setup.
8. Load Defaults will no longer change the TPM settings.
9 Do not perform certain TPM measurement on S3 resume to reduce resume time.
Version
A07, A07
Release date
25 Apr 2012
Download Type
System BIOS
Category
BIOS
Importance
OptionalDell Technologies recommends reviewing this update to determine if it applies to your system. The update contains changes that impact only certain configurations or provides new features that may or may not apply to your environment.
Supported Operating Systems
BIOS
Looking for a different OS? View the list of Dell supported operating systems
Applies to
Dell Latitude E5420
Installation instructions
Download file to Desktop
The file E5420A07.EXE is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.
Click Download now.The File Download window appears.
Click the Save button.The Save As window appears.
Select Desktop using the drop-down menu to the right of Save in.
Click the Save button.A progress meter moves as the download is completed.
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
Double click the Icon on your desktop labeled E5420A07.EXE.The Dell BIOS Flash window appears
Click the Continue button.The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.
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 diskette. This executable file does not create the DOS system files.
Copy the file E5420A07.EXE to a bootable floppy.
Boot from the floppy to the DOS prompt.
Run the file by typing Y:\E5420A07.EXE (where y is the drive letter where the executable is located).
The file E5420A07.EXE is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.
Click Download now.The File Download window appears.
Click the Save button.The Save As window appears.
Select Desktop using the drop-down menu to the right of Save in.
Click the Save button.A progress meter moves as the download is completed.
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
Double click the Icon on your desktop labeled E5420A07.EXE.The Dell BIOS Flash window appears
Click the Continue button.The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.
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 diskette. This executable file does not create the DOS system files.
Copy the file E5420A07.EXE to a bootable floppy.
Boot from the floppy to the DOS prompt.
Run the file by typing Y:\E5420A07.EXE (where y is the drive letter where the executable is located).
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.