Dell OptiPlex System BIOS, A05

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 : T75WC

Importance : Optional

Version : A05, A05 Latest version Recommended version Latest and Recommended version

Release Date : 07 Nov 2005

Download Type : System BIOS

Category : BIOS

OptiPlex GX620/GX520 A05 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: GX620A05.EXE

File size: 506.5 KB

Download .EXE

Fixes & Enhancements

The following changes have been made to BIOS rev A03 to create A05:

1. Add support for newer processors
2. Clear power management event status after waking system
3. Add 'Limit CPUID Value' display in SETUP
4. Update help text for "Intel(R) Virtualization Technology"
5. Update drive security help text
6. Update processor logos
7. Improve BIOS flash support
8. Improve hard drive password reliability
9. Correct text syntax in Unlock Setup option
10. Update to PXE 8.2.5
11. Add PCI BUS resource reservations in ACPI for USB 2.0 and ACPI
12. Improve support for Celeron Processors

Compatible Systems

OptiPlex GX520

OptiPlex GX620

Installation instructions

Installation Instructions for the Universal (Windows/ 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 DOS environment (Non-Windows users)

Download file to Desktop

The file GX620A05.EXE is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.

Click Download now.
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 GX620A05.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 DOS environment (Non-Windows users)

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

Copy the file GX620A05.EXE to a bootable floppy.

Boot from the floppy to the DOS prompt.

Run the file by typing Y:\GX620A05.EXE (where y is the drive letter where the executable is located).

Dell OptiPlex System BIOS, A05

Download Files

Fixes & Enhancements

Compatible Systems

Supported Operating Systems

Installation instructions

Applies to