Dell OptiPlex 5040 System BIOS

Before updating BIOS to 1.5.7, must upgrade Intel Graphic driver to 10.18.15.4279, A01, or above version to avoid blurred screen after resuming system from sleep stage. If blurred happens, please force to restart the computer then upgrade Intel Graphic driver to 10.18.15.4279, A01, or above version

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.

Perform the BIOS update from the BIOS Boot Menu, independent of operating system, if BIOS supported
1. Copy the downloaded file to a USB flash device. It does not need to be bootable.
2. Insert the USB flash device into any USB port.
3. Power on the system.
4. At the DELL logo screen, press F12 to access the one time boot menu.
5. Select "BIOS Flash Update" in the "Other Options" section.
6. Click on the "..." button to browse the USB flash device to locate the downloaded file.
7. Select the file and click "Ok"
8. Confirm the Existing System BIOS Information and the BIOS Update Information are as expected.
9. Click "Begin Flash Update"
10. Reviewing the Warning message and click "Yes" to proceed with the update.
11. The system should restart and show a Flash Progress bar on the Dell logo screen as the BIOS update is being performed.
12. The system will restart once again when the Flash update is complete.
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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.