Dell OptiPlex System BIOS, A04

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.

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Driver Id : R77798

Importance : Optional

Version : A04, A04 Latest version Recommended version Latest and Recommended version

Release Date : 28 Jun 2004

Download Type : System BIOS

Category : BIOS

Optiplex SX270 A04 System BIOS.

Download Files

File Format: 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.

File Name: SX270A04.EXE

File size: 515.89 KB

Download .EXE

Fixes & Enhancements

The following changes have been made to the A03 BIOS to create the A04:
1. Fixed 1M/8M switch for non-Windows OS.
2. Prevent possible hang at boot when XP ICH2 driver installed.
3. Updated microcode for newer CPUs.
4. Added support for special keyboard.
5. Updated PXE support with latest drop.
6. Added detection code for CPU/Cache failures.
7. New MFG MODE messaging.
8. Fixed video display problem with non-VGA register compatible video devices.

Compatible Systems

OptiPlex SX270

OptiPlex SX270N

Installation instructions

Installation Instructions for the Universal (Windows/MS DOS) format

Download file to Desktop

Use one of the methods below to flash the Bios.

Run the BIOS update utility from Windows environment

Run the BIOS update utility from MS DOS environment (Non-Windows users)

Download file to Desktop

The file SX270A04.EXE is using the Universal (Windows/MS DOS) format and is designed to be directly executed from Windows environment.

Click Download now.
The Export Compliance Agreement appears.

Read the Export Compliance Agreement.

If you agree, click to select I agree..
The File Download window appears.

Click the Save button.
The Save As window appears.

Select Desktop using the drop-down menu to the right of Save in.

Click the Save button.
A progress meter moves as the download is completed.

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

Double click the Icon on your desktop labeled SX270A04.EXE.

The Dell BIOS Flash window appears

Click the Continue button.

The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.

Click the OK button.

The system will restart and the BIOS Flash will be completed.

Run the BIOS update utility from MS DOS environment (Non-Windows users)

NOTE:You will need to provide a bootable DOS diskette. This executable file does not create the MS DOS system files.

Copy the file SX270A04.EXE to a bootable floppy.

Boot from the floppy to the MS DOS prompt.

Run the file by typing Y:\SX270A04.EXE (where y is the drive letter where the executable is located).

Dell OptiPlex System BIOS, A04

Download Files

Fixes & Enhancements

Compatible Systems

Supported Operating Systems

Installation instructions

Applies to