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Updation of cmos bios.

By tsn ·
hi,
iam madhukumar,one of your techmail subscriber.iam having one problem and iam giving the details below:
How to update cmos bios in acer (desktop) motherboard model is v76m ,because iam geeting "cpu bios mismatch" error coming while booting.
let me provide the details like where can i get the required files and updation procedure.kindly help me in this regard as early as possible.

my mail id is cksmk@wipro.co.in

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Updation of cmos bios.

by arunsolomon@rediffmail In reply to Updation of cmos bios.

Hi madhu
as far as I can see from the message it appears the BIOS is having the wrong CPU type or name, perhaps U can get into the CMOS and change it, to whatever your CPU is

as far as upgrading your BIOS log on to ACER website and download theFLASH utilty boot into your machine using a startup disk of DOS, WIN95/98 and run the FLASH utility to upgrade, please read the README file before you do this and be careful becos you cannot undo the operation, you could end up with a spoilt motherboard

pls reply if this has solved your problem

Warm Regards
Arun Solomon

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Updation of cmos bios.

by tsn In reply to Updation of cmos bios.

The question was auto-closed by TechRepublic

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Updation of cmos bios.

by Bhrdwh In reply to Updation of cmos bios.

Hi Madhu,
You can get a free patch for your BIOS from the internet onto a floppy & simply boot your system with the floppy. It will upgrade your system.
You need to know more info like BIOS version & Motherboard Serial # since you already know your Computer's Brand, Motherboard type.
When you boot your system, check on the left-top screen for various serial numbers else open the system & see the motherboard serial#.

I found few Acer sites as
1. http://www.office-consult.de/acerpc.htm
2. http://www.acer.co.uk/products/mn_desktop_power_se_specs.shtml
3. Http://support.acer-euro.com/drivers/utilities.html

Search the site #3 & sure you'll find the BIOS patch.

Akash
Akashdeep_B@yahoo.com

Akash

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Updation of cmos bios.

by tsn In reply to Updation of cmos bios.

The question was auto-closed by TechRepublic

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Updation of cmos bios.

by maxwell edison In reply to Updation of cmos bios.

After the installation of a new CPU the system starts with an error message such as:
CPU BIOS UPDATE CODE MISMATCH or BU CODE MISMATCH and Equipment Configuration Error.
Clarification:

Every Pentium II or III CPU (Codename Klamath, Katmai, Coppermine etc) or Pentium Pro Generation CPU contains so-called "stepping" (type identifier) value which is set during manufacture. This stepping information is verified by the BIOS against a stored list during system start. If the CPU is changed the new values must be set in the BIOS (or the BIOS values must be updated) if the CPU is not present on the current lists.

Each BIOS Version contains stepping codes for different CPU Types. If you upgrade a PC or Server with a new CPU you may get the above error message. This means the stepping code for the new CPU is not included in your current BIOS Version. In this case it is recommended to update your System BIOS.

By flashing your motherboard, you agree to accept the possibility of BIOS flash failure. If you intent to upgrade the BIOS, PLEASE BE SURE to use the right BIOS revision for the right motherboard model.

If you still get the BIOS UPDATE CODE MISMATCH message after updating to the latest BIOS Version for you System, you need to update the stepping seperatly.
To match the CPU stepping data and the data stored in the BIOS a CPU stepping update should be performed.

(continued...)

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Updation of cmos bios.

by maxwell edison In reply to Updation of cmos bios.

.
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Note: The stepping code update can damage your system if you have not the latest BIOS Version installed.

Start the system without drivers (DOS boot diskette) and run the BU code update program. The program will display the stepping data andID for your CPU (value in brackets). Identify the source code file that contains the correct, matching steppings and values for your CPU (the attached pdb file contains most stepping codes) Run the program Chekup6.exe with the parameter call to the correct source file as shown in the following example:
eg. For Example : checkup6 -p per_p_10.pdb
After the update, and a full re-start of your system, all settings will be correct and the error messgae will no longer be shown.

Download the Stepping update tool
(BIOS Update Tools, Stepping Code update)

http://support.acer-euro.com/faqs/FAQData/635.html

(REMOVE SPACES from the pasted URL)

Maxwell

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Updation of cmos bios.

by tsn In reply to Updation of cmos bios.

The question was auto-closed by TechRepublic

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Updation of cmos bios.

by tsn In reply to Updation of cmos bios.

This question was auto closed due to inactivity

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