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Driver Details

Dell OptiPlex System BIOS, A05
Optiplex GX240 A05 FlashBIOS
Release Date 8/16/2002
Importance: Optional
Version: A05

The following formats are available for the file you have selected

File Format: Floppy Download File Download File
File Name:


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.
Download Type: HTTP
File Size: 477KB

File Format: Non-Packaged Download File Download File
File Name:


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.
Download Type: HTTP
File Size: 303KB

Previous Versions

No previous version available.


Optiplex GX240 A05 FlashBIOS

Level of Importance:Optional

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.


OptiPlex GX240
Operating Systems

Applies to

  • Dell Device
  • OptiPlex System BIOS

Fixes & Enhancements

The following changes have been made to the A04 BIOS to create A05: 1. Added support for new Processors. 2. Fixed possible CMOS corruption when adjusting system configuration through Open Manage. 3. Updated ACPI sleep state mapping code to fix USB 2.0 devices not being found after a resume. 4. Added IDE UDMA support to speed up resume from Hibernate (when enabled). 6. Adjusted USB Emulation support for special keys, and non-US keyboards. 7. Fixed false error on Floppy Drive when running Diags From Bootable Diags CD without a Floppy Drive. 8. Fixed issues with some USB devices causing a keyboard POST error with a USB keyboard. 9. Reduce POST time when no PS/2 keyboard or Mouse installed. 10.Added two new diagnostic LED codes for better memory failure isolation. No Memory Detected (ABCD=Grn, Yel, Yel, Yel) Memory Configuration Failure (ABCD=Grn, Yel, Grn, Yel) 11.Fixed potential hang when exiting SETUP after defaulting device boot list.

Installation instructions


Default Instructions for gx240a05.exe: Non-Packaged Creating the disk: NOTE: This procedure requires one blank bootable, formatted 3.5-inch floppy disk; label the disk BIOS. 1. When the File Download window appears, click “Save this program to disk”. 2. Choose “Desktop” as the location. 3. Click “Ok”. 4. After the file has finished copying files, click “Close”. 5. Press the “Windows” + “M” keys at the same time to minimize all the open windows. 6. Insert the blank bootable formatted 3.5-inch floppy disk. 7. Right-click the copy of the file, point to “Send To”, click “3 1/2 Floppy (a)”, and then skip to the section Flashing the BIOS below. Flashing the BIOS: NOTICE: Changing the system BIOS may result in unintended side affects, such as incompatibility of the new BIOS with installed hardware. If problems arise after a BIOS change, it may be necessary to return the system to the original version of the BIOS. 1. If you are flashing the BIOS on a portable computer, be sure that the AC adapter is plugged in and the computer is not operating on battery power. 2. Ensure that the Flash BIOS disk is inserted into the floppy disk drive. 3. Click the “Start” button, click “Shut Down”, click “Restart”, and then click “Ok”. The computer should restart and boot to the floppy disk. NOTE: If the flash BIOS program does not start, and you see only an A:\ prompt, refer to the instructions from the Dell File Library page for the BIOS update or to the Readme.txt instructions. Generally, you will type the name of the executable flash BIOS file such as BGX1_A10.exe for BIOS version A10 on the OptiPlex™ series system. A Press any key to continue prompt appears. 4. Press the “Enter” key. A Press Y to replace old BIOS with new BIOS prompt appears. 5. Press the “Y” key. NOTICE: Do not interrupt the system during this process. Please refrain from pressing any keys on the keyboard, moving the mouse, or interrupting power to the system. Failure to do so could result in damage to the system BIOS. When the computer has finished updating the BIOS, a Flash program successful. Press any key to reboot prompt appears. 6. Remove the floppy disk and press the “Enter” key. 7. The computer will now restart with the new revision of the BIOS installed. The boot screen will indicate the BIOS version. If you encounter device or resource errors after flashing the system BIOS, enter the System Setup, clear the NVRAM and restore the system defaults. For more information, refer to Dell Knowledge Base Articles: · FA1035264 Title "How do I restore setup defaults on my Dell OptiPlex system?" · FA1035227 Title "How do I clear NVRAM on my Dell OptiPlex system?" Floppy Disk Boot to Disk for Bgx24005.exe Download 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


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