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.
Dell Latitude C840 System BIOS, A10
Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.Latitude C840 FlashBIOS Version A10
Recommended
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Fixes & Enhancements
The following updates were made to the A09 BIOS to create the A10 BIOS:
Issues Fixed:
1. Fixed issue in which the system may display the following error
after the BIOS is flashed using Floppyless or Remote BIOS Update:
"The System ROM version and the Keyboard Controller ROM versions
do not match."
2. Fixed problem under Windows 2000 Service Pack 3 where a Matrox
Millennium G450 PCI card installed in a C/Dock or C/DockII PCI slot
would be listed in Device Manager with an error.
3. Fixed a problem with an erratic USB Mouse while running the Dell
Diagnostic utilities.
4. Fixed problem where there may be slow device recognition for USB
devices connected to HUBs during POST and while in use.
5. Fixed problem where the hot-key will not respond under
ACPI with AC attached and no batteries installed.
6. Fixed issue in which modular bay and dock media bay drives may not
be recognized correctly by SMBIOS under ACPI operating systems.
7. Fixed problem in which SMBIOS fails to notify Dell Open Manage
Client Instrumentation of system fan failures.
8. Fixed problem where the USB signal strength would deteriorate when
using 5 meter long cables.
9. Fixed problem where PenPower may break TouchPad and external mice
functionality.
10. Fixed problem where the system may stop responding after escaping
a BIOS system password screen on resumes under ACPI operating
systems.
11. Fixed problem where popping noise may be heard during POST and
resumes under ACPI operating systems.
12. Fixed issue in which System Setup displays the wrong capacity
for hard disk drives larger than 65GB.
Enhancements:
1. Enhanced BIOS support to ensure Computrace Security Software
operates consistently when new BIOS versions are released.
Read MoreIssues Fixed:
1. Fixed issue in which the system may display the following error
after the BIOS is flashed using Floppyless or Remote BIOS Update:
"The System ROM version and the Keyboard Controller ROM versions
do not match."
2. Fixed problem under Windows 2000 Service Pack 3 where a Matrox
Millennium G450 PCI card installed in a C/Dock or C/DockII PCI slot
would be listed in Device Manager with an error.
3. Fixed a problem with an erratic USB Mouse while running the Dell
Diagnostic utilities.
4. Fixed problem where there may be slow device recognition for USB
devices connected to HUBs during POST and while in use.
5. Fixed problem where the
ACPI with AC attached and no batteries installed.
6. Fixed issue in which modular bay and dock media bay drives may not
be recognized correctly by SMBIOS under ACPI operating systems.
7. Fixed problem in which SMBIOS fails to notify Dell Open Manage
Client Instrumentation of system fan failures.
8. Fixed problem where the USB signal strength would deteriorate when
using 5 meter long cables.
9. Fixed problem where PenPower may break TouchPad and external mice
functionality.
10. Fixed problem where the system may stop responding after escaping
a BIOS system password screen on resumes under ACPI operating
systems.
11. Fixed problem where popping noise may be heard during POST and
resumes under ACPI operating systems.
12. Fixed issue in which System Setup displays the wrong capacity
for hard disk drives larger than 65GB.
Enhancements:
1. Enhanced BIOS support to ensure Computrace Security Software
operates consistently when new BIOS versions are released.
Version
A10, A10
Release date
12 Mar 2003
Download Type
System BIOS
Category
BIOS
Importance
OptionalDell Technologies recommends reviewing this update to determine if it applies to your system. The update contains changes that impact only certain configurations or provides new features that may or may not apply to your environment.
Available formats
File Format: ZipPack External
File Name: A10-C840.EXE
File Size: 2.26 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, and then run (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.
File Format: One or more self extracting disk images inside of a self extracting zip
File Name: C840-A10.EXE
File Size: 613.2 KB
This is a large file. Depending on your connection speed, it may take some time to download.
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.
File Format: Flash BIOS executable
File Name: C840_A10.exe
File Size: 378.05 KB
This is a large file. Depending on your connection speed, it may take some time to download.
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.
File Format: A text file containing customer friendly fixes and enhancements information
File Name: C840_A10.TXT
File Size: 11.92 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format contains plain text which can be viewed with a standard text editor.
To ensure the integrity of your download, please verify the checksum value.
By downloading, you accept the terms of the Dell Software License Agreement.
Installation instructions
Custom Instructions for C840_A10.exe:
This file format consists of a BIOS executable file. To use it, download
the file and copy it to a DOS-bootable diskette. With the diskette in the
floppy drive, reboot the system and run the program.
Custom Instructions for C840_A10.TXT:
This file format contains plain text which can be viewed with a standard
text editor.
Floppy Disk Boot to Disk for C840-A10.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 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.
Install
1. Insert the first (or the only) disk of the set into the Floppy
drive.
2. Click Start, click Shutdown, click Restart, and then click OK.
Windows XP Users need only click restart.
3. Follow the on-screen instructions.
Hard Drive Installation (via WinZip) with Setup.exe File for A10-C840.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.
Install
1.Double-click the new icon on the desktop labeled A10-C840.EXE.
2.The Self-Extracting window appears and prompts you to extract or
unzip to C:\DELL\DRIVERS\r57451. Write down this path so the executable (I.e.
Setup.exe) file can be found later.
3.The Self-Extractor window appears.
4.Click OK.
5.After completing the file extraction, if the Self-Extractor
window is still open, close it.
6.Click the Start button and then click Run.
7.Type C:\DELL\DRIVERS\r57451 in the Open textbox and then click OK.
8.Follow the on-screen installation instructions.
Custom Instructions for C840_A10.exe:
This file format consists of a BIOS executable file. To use it, download
the file and copy it to a DOS-bootable diskette. With the diskette in the
floppy drive, reboot the system and run the program.
Custom Instructions for C840_A10.TXT:
This file format contains plain text which can be viewed with a standard
text editor.
Floppy Disk Boot to Disk for C840-A10.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 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.
Install
1. Insert the first (or the only) disk of the set into the Floppy
drive.
2. Click Start, click Shutdown, click Restart, and then click OK.
Windows XP Users need only click restart.
3. Follow the on-screen instructions.
Hard Drive Installation (via WinZip) with Setup.exe File for A10-C840.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.
Install
1.Double-click the new icon on the desktop labeled A10-C840.EXE.
2.The Self-Extracting window appears and prompts you to extract or
unzip to C:\DELL\DRIVERS\r57451. Write down this path so the executable (I.e.
Setup.exe) file can be found later.
3.The Self-Extractor window appears.
4.Click OK.
5.After completing the file extraction, if the Self-Extractor
window is still open, close it.
6.Click the Start button and then click Run.
7.Type C:\DELL\DRIVERS\r57451 in the Open textbox and then click OK.
8.Follow the on-screen installation instructions.
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting guideDrivers help and tutorials
For more downloads go to the Drivers and downloads. For help on using the information on this page, please visit Driver Help and Tutorials.