Dell OptiPlex System BIOS, A05

Optiplex 160L A05 FlashBIOS

Fixes & Enhancements

The following changes have been made to BIOS rev A04 to create A05:

1. Improve splash screen logo positioning.
2. Prevent loss of audio on power-up or after S3 resume.
3. If AC lost during S3 standby, don't attempt S3 resume when AC restored.


Version A05, A05



Release date

03 Mar 2004

Last Updated

03 Nov 2011


Available formats

File Format:Floppy
File Name:BR70279.exe
Download Type:HTTP
File Size: 604 KB
Format Description:This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, then double-click it to unzip the set of files. Follow the instructions to complete the installation.
To ensure the integrity of your download, please verify the checksum value.
Not available
Not available
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File Format:Non-Packaged
File Name:D160LA05.EXE
Download Type:HTTP
File Size: 506 KB
Format Description:This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
To ensure the integrity of your download, please verify the checksum value.
Not available
Not available
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By downloading, you accept the terms of the Dell Software License Agreement.

Applies to
OptiPlex System BIOS
Installation instructions

Installation Instructions

The file D160LA05.EXE is using the Hard Drive format and is designed to be directly executed from Windows environments.

    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.

    1. Double click the Icon on your desktop labeled D160LA05.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.

    Floppy Disk Boot to Disk for BR70279.exe


    1. Click Download Now, to download the file.
    2. When the File Download window appears, click Save (Windows XP users will click Save) this program to disk and click OK. The Save In:
    window appears.
    3. From the Save In: field, click the down arrow then click to
    select Desktop and click Save. The file will download to your desktop.
    4. If the Download Complete window appears, click Close. The file
    icon appears on your desktop.

    Hard Drive Floppy Disk Creation

    1. Get 1 blank, formatted floppy disks.
    2. Double-click the new icon (it looks like a floppy diskette) on
    the desktop. The Self-Extractor window appears.
    3. Click Setup. An black MS-DOS window appears with a message
    indicating that you need 1 floppy diskettes.
    4. Press the [ENTER] key.
    A message appears prompting you to insert a blank floppy diskette.
    5. Insert a floppy disk into the floppy disk drive.
    6. Press the [ENTER] key. A message appears indicating that all
    data on the disk will be erased.
    7. Press the [y] key and then press the [ENTER] key.
    The files are copied to the floppy diskette. If the procedure requires
    more than one diskette, repeat steps 5 – 7 until you reach the end of the diskette set.
    8. After all the files have been copied to the last floppy disk,
    press the [ENTER] key and the MS-DOS window closes.


    1. Insert the first (or the only) disk of the set into the Floppy
    2. Click Start, click Shutdown, click Restart, and then click OK.
    Windows XP Users need only click restart.
    3. Follow the on-screen instructions.

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 the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.