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 Latitude E6540 System BIOS

Restart required
This package provides the Dell System BIOS update and is supported on Dell Latitude E6540 for Windows and DOS Operating Systems.
To view all drivers for your Latitude E6540, go to Drivers and downloads.
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E6540A08.exe

File Format: CPG BIOS Executable for Windows/DOS
File Name: E6540A08.exe
File Size: 9.58 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:
a9b0679c50b7e784037927ea12a1ba12
SHA1:
3fd6c27d17fe4e5f356b55aa7f8627a85991b54e
SHA-256:
3b06bdc373e9f47f874570735ae7c0d01a506f49ca7127abf6752df224789474

Fixes & Enhancements

Fixes
- Fixed AC Adapter wattage will not updated in BIOS setup when dock attach AC adapter.
- Fixed BIOS cannot determine AC power adapter wattage and type.
- Fixed DPM show incorrect battery charge status if remove battery in Sleep state then resume.
- Fixed cannot resume from Hibernate state first time after set SSD password and load default in bios setup menu.

Enhancements
- Enhanced Intel CPU Microcode.
- Enhanced SATA RX setting.
- Enhanced video on external monitor during pre-boot operations.
Read More

Version

A08

Release date

27 Feb 2014

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.

Additional details

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Dell Latitude E6540
BIOS Update Executable for Windows/DOS

Download
1. Click "Download File", to download the file.
2. When the File Download window appears, click Save to save the file to your hard drive.

Run the BIOS update utility from Windows environment
1. Browse to the location where you downloaded the file and double-click the new file.
2. Windows System will auto restart and update BIOS while system startup screen.
3. After BIOS update finished, system will auto reboot to take effect.

Run the BIOS update utility from DOS environment, if Legacy Boot mode (Non-Windows users)
1. Copy the downloaded file to a bootable DOS USB key.
2. Power on the system, then Press F12 key and Select "USB Storage Device" and Boot to DOS prompt.
3. Run the file by typing copied file name where the executable is located.
4. DOS System will auto restart and update BIOS while system startup screen.
5. After BIOS update finished, system will auto reboot to take effect.

Run the BIOS update utility from DOS environment if UEFI Boot Mode (Non-Windows users)
1. Copy the downloaded file to a bootable DOS USB key.
2. Power on the system, then go to BIOS Setup by pressing F2 and go to "General > Boot Sequence > Boot List Option".
3. Change "UEFI" to "Legacy" of Boot List Option.
4. Click "Apply", "Exit" to save changes and reboot system.
5. Press F12, then Select "USB Storage Device" and Boot to DOS prompt.
6. Run the file by typing copied file name where the executable is located.
7. After BIOS update finished, system will auto reboot .
8. Go to BIOS Setup by pressing F2 and go to "General > Boot Sequence > Boot List Option".
9. Change "Legacy" to "UEFI" Boot Option.
10. Click "Apply", "Exit" to save changes and reboot system.

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Note 1: You will need to provide a bootable DOS USB key. This executable file does not create the DOS system files.
Note 2: Please make sure you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system.
If you don't enable BitLocker on your system you can ignore it.

Reboot will be required

Need help with BIOS issues?

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

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