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 OptiPlex 780 System BIOS, A05

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.
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Fixes & Enhancements

1.Added support to special PCI card-Xtenda X30 multiuser card
2.Added support to boot to USB Drive which larger than 1TB
3.Added security support for OROM access
4.Updated Intel Video Option ROM
5.Make more memory available for 32bit Operation system if 4GB memory installed
Read More

Version

A05, A05

Release date

30 Aug 2010

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.
Available formats
File Format: CPG BIOS Executable for Windows/DOS
File Name: O780-A05.EXE
File Size: 2.49 MB
This is a large file. Depending on your connection speed, it may take some time to download.
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:
4ac24e7113dfcc3ec583521a6323e60e
SHA1:
Not available
SHA-256:
Not available

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

Additional details

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Dell Optiplex 780
OptiPlex 780 System BIOS
Custom Instructions for O780-A05.EXE:

Installation Instructions for the Universal (Windows/ DOS) format


  1. Download file to Desktop


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





Download file to Desktop


The file O780-A05.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 O780-A05.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 USB key. This executable file does not create the DOS system files.

  1. Copy the file O780-A05.EXE to a bootable USB key.


  2. Boot from the floppy to the DOS prompt.


  3. Run the file by typing Y:\O780-A05.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.

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