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Sir, when i started my system there was a message in DOS mode "bad bios checksum. starting BIOS recovery ........ checking floppy drive ....... checking CD_ROM...........

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  • Motherboards Master
  • 2,382 Answers

The battery of the motherboard may gone weak, replace it with a new one.

Posted on Jan 03, 2009

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  • 156 Answers

SOURCE: bad bios checksum

You need to go to the website of whoever made the motherboard and get the BIOS flash utility and the BIOS binary file to update your BIOS. Make sure you get the right one, as using the wrong one can render your motherboard worthless. The BIOS file has to be the exact match. There is no such thing as close in this situation.
If you are not sure of the exact make and model, get te free Belarc Advisor from http://www.belarc.com
The BIOS chip holds information about your motherboard hardware. It is reprogrammable. It uses what is known electrically erasable read only memory. This is also called Flash memory. Reprogramming is called flashing. When you flash the BIOS, all data is erased, then the new data is written. The flash utility will most likely allow you to save the old contents, but you might have an extremely tough time recovering from an improper flash. You'll also probably need a couple of floppy disks, one of which may have to be bootable. If you need a bootable floppy disk, you can get an image file from http://www.bootdisk.com.

Posted on Jan 23, 2009

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How can i make bios k8n-vm.rom to motherboard because i cant read from flopy this file , thank you


anaging and updating your BIOS
The following utilities allow you to manage and update the motherboard
Basic Input/Output System (BIOS) setup.
1.
ASUS EZ Flash
(Updates the BIOS using a floppy disk during POST.)
2.
ASUS AFUDOS
(Updates the BIOS in DOS mode using a bootable floppy
disk.)
3.
ASUS CrashFree BIOS 2
(Updates the BIOS using a bootable floppy
disk or the motherboard support CD when the BIOS file fails or gets
corrupted.)
4.
ASUS Update
(Updates the BIOS in Windows
®
environment.)
Refer to the corresponding sections for details on these utilities.


prepare the motherboard support CD or the floppy disk containing the updated motherboard BIOS before using this utility.
• Make sure that you rename the original or updated BIOS file in the
floppy disk to K8NVM.ROM.

Recovering the BIOS from the support CD
To recover the BIOS from the support CD:
1. Remove any floppy disk from the floppy disk drive, then turn on the
system.
2. Insert the support CD to the optical drive.
3. The utility displays the following message and automatically checks
the floppy disk for the original or updated BIOS file.
4. Restart the system after the utility completes the updating process.
DO NOT shut down or reset the system while updating the BIOS! Doing
so can cause system boot failure!

more details read http://dlcdnet.asus.com/pub/ASUS/mb/sock754/K8N-VM/e2537_k8n-vm.pdf

Aug 22, 2010 | ASUS K8N-VM Motherboard

1 Answer

Boot block compatible ver.024 Please do not insert disc into cd-rom or floppy drive if you want to recovery with an usb device bad bios checksum.


Bad BIOS checksum: the software on a chip on the motherboard has become corrupted.

Sometimes, you can find a "BIOS update" on the manufacturer's web-site, so that the contents of that chip can be refreshed,
i.e., by booting from a diskette (or from a USB memory-stick) that contains the replacement software.

Contact a qualified technician, and pay them for 1 hour of labour.
Or, replace the motherboard.

Jul 17, 2009 | ASUS M2N-MX Motherboard

1 Answer

My computer can not boot -BIOS ROM checksum error


to be honest if you have tried to re-flash your bios, and it did not work you still either have hte wrong version or the disc drive your using to flash it from is faulty. try another floppy drive/disc and try again. if that dont work. to be honest it's not worth getting it repaired just go out and spend £30-40 on a new mobo. sorry i'm not more helpfull but i dont believe it's worth spending that much time and effort on an old system like that with this kind of problem. good luck to you. let me know how you get on ok.

Jun 15, 2009 | EliteGroup K7VTA3 V5.0 Motherboard

2 Answers

P4S800D.ROM not found


check the the bios battery, it should be 3volt not less,and press dell to in the bios page setup set and set everything you need to do.and don't forget to save it,. good luck

May 10, 2009 | ASUS P4S800D Motherboard

1 Answer

Failure of both (dual) bios after updating


Sorry bud, when you flashed the BIOS it obviously did not like it..Nine long continuous beeps is ROM BIOS checksum error. Another words you need a new CMOS chip as you cannot backdate a flash BIOS. You can't boot from any disk because the boot process never even gets to the part where you can use your system. BIOS is first when you start up and if you can't get by it then nothing will work. The only advice is use this as a good learning experience and make a backup of your BIOS in the future. Good luck..don't shoot the messenger. Please rate this solution before you log out.

Feb 06, 2009 | Gigabyte GA-K8NF-9 (890552602964)...

1 Answer

Bad bios checksum


You need to go to the website of whoever made the motherboard and get the BIOS flash utility and the BIOS binary file to update your BIOS. Make sure you get the right one, as using the wrong one can render your motherboard worthless. The BIOS file has to be the exact match. There is no such thing as close in this situation.
If you are not sure of the exact make and model, get te free Belarc Advisor from http://www.belarc.com
The BIOS chip holds information about your motherboard hardware. It is reprogrammable. It uses what is known electrically erasable read only memory. This is also called Flash memory. Reprogramming is called flashing. When you flash the BIOS, all data is erased, then the new data is written. The flash utility will most likely allow you to save the old contents, but you might have an extremely tough time recovering from an improper flash. You'll also probably need a couple of floppy disks, one of which may have to be bootable. If you need a bootable floppy disk, you can get an image file from http://www.bootdisk.com.

Jan 23, 2009 | Intel Motherboard

1 Answer

Checksum error


Hi Oliver, the most common error related to the message,
(Bios Rom Checksum Error). Someone has left a floppy disk in the floppy drive. Once the floppy disk has been removed press the reset button on the PC, your windows will start normally. Next place to look is in your bios.
Open your manual to page 27.
Enter your bios & go to the title Advanced BIOS Features. Check First, Second & Third boot devices they should be as follows. Floppy disk drive, CD-ROM drive & primary hard disk drive. If both of the above are ok than try clearing the cmos/bios by resetting the cmos jumper (JP1) location on page 5. Descriptions of page five on page 6. CMOS settings on page 9.
When your system restarts re-enter your cmos & reset up your bios settings. Lastly if none of the above has fixed the error message, than remove the cmos battery & check its voltage. It should maintain 3volts. If yours' is lower than 3volts replace the cmos battery. There is one other possible fix. It’s an option not given lightly. Flashing a cmos/bios is not recommended unless all other options have failed.
Bios link for the EliteGroup P4VMM2 V8.1
http://www.ecs.com.tw/ECSWebSite/Downloads/ProductsDetail_Download.aspx?detailid=436&DetailName=Bios&DetailDesc=P4VMM2%20%20(V8.1)&CategoryID=1&MenuID=82&LanID=0
Main web site;
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?CategoryID=1&DetailID=436&DetailName=Feature&MenuID=52&LanID=0

Good luck Oliver!
Mike

Aug 23, 2008 | EliteGroup P4VMM2 V8.1 Motherboard

1 Answer

Biostar P4M900-M7 SE BIOS ROM Checksum Error


The bios upgrade procedure stopped at half , leaving the bios corrupted. The computer now cannot do a regular boot procedure, this is the reason why it cannot recognise some device. If you are still able to boot from floppy, you can restart bios upgrade procedure from floppy. Just download floppy version upgrade and re do setup. Even if you do not find latest bios version, just download a floppy upgrade that is working, so that you can restart your machine regularly , and then do the update to latest version.
If you are not able to complete the bios setup, the only way to fix your motherboard will be flashing the CMOS chipset with a chip programmer device that will reinstall bios straight into cmos chipset.
You can have this done at the service point, in this case consider also replacing your motherboard.

Regards

Apr 03, 2008 | Biostar P4M890-M7 Motherboard

5 Answers

Bad BIOS checksum.... CMOS bad checksum errors


BOOT BLOCK COMPATIBLE VERSION VER .005
BAD BIOS CHECKSUM

CHECKING FOR CD ROM
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
NO CD-ROM FOUND
CHECKING FOR FLOPPY DISK
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
READING FILE "P5SD2VM.ROM"
NO FLOPPY DISK FOUND

Does someone already fix this problem??????

Nov 15, 2007 | ASUS M2N-MX Motherboard

1 Answer

Bios failure


you may have a flat cmos battery, but first try reseting the bios by the cmos reset terminals, refer to the manual

Sep 14, 2007 | ASUS A8V-VM Motherboard

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