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
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
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
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
Default Instructions for gx240a05.exe:
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
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
2. Ensure that the Flash BIOS disk is inserted into the floppy disk
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
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
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
· FA1035227 Title "How do I clear NVRAM on my Dell OptiPlex system?"
Floppy Disk Boot to Disk for Bgx24005.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:
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