Driver Details

Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

Dell Optiplex 790 System BIOS

This package provides the BIOS update for Dell OptiPlex 790 running in the following Operating Systems: Windows and DOS.

Fixes & Enhancements

1. Addressed system does not respond to keyboard intermittently.
2. Addressed UEFI OS fail boot with HDD password present issue.
3. Addressed CCTK issues.
4. Improve the compatibility of PCI devices and USB devices.
5. Update Intel Microcode for SandyBridge processor.
6. Update Intel PXE ROM.

Version

Version A18, A18

Category

BIOS

Release date

30 Sep 2013

Last Updated

21 Mar 2014

Importance

Available formats

File Format:Windows/DOS
File Name:O790-A18.exe
Download Type:HTTP
File Size: 5 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:
e6e2405c638a318a0c84c522911ca9ca
SHA1:
9c67b06f0f1c5b0f850d26adc9e00e0f5a12e6f2
SHA-256:
8a611e0c96719553a2ae3cdeb45590e92c8c05bdf7181b9ee70c47d1754b672c

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

Applies to
Dell Optiplex 790
Installation instructions
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.
Important Information
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. Please note that if the A05 or after A05 BIOS and before A10 is currently installed on your system you must first update to A10 BIOS and then flash to the latest A-rev BIOS.
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Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

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).