Question about Gigabyte GA-8I845GVM-RZ Motherboard

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Checksum error .....

I am getting this error whilr rebooting my PC...

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  • Sibananda
    Sibananda Jun 14, 2009

    Thank you ....

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This means your CMOS battery is exhausted ..pls replace it ...

Posted on Jun 14, 2009

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1 Answer

Cmos checksum error


You just need to replace the button CMOS Battery CR2032.
Reboot. Press F2 and enter the correct date and time.

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Checksum error


It depends on what file gave the checksum error. You need to copy that file to overwrite the one that gave the checksum error.

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I have a K8N-VM mobo. I flashed it up the other day. Initially it worked fine but when I tried to go into the bios settings it hung. I rebooted and got the Bios Checksum error screen. I shut down and...


Reboot, go into the BIOS despite the error message then lower some settings below default values. Save and restart - if you got the same error message again then the BIOS chip is no longer powered correctly, the motherboard is dead.

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Getting a CMOS checksum bad error when starting my Acer M5640 Desktop with Windows 7 Thanks Daniel


Solutions to CMOS Checksum Bad Error

The CMOS Checksum Bad Error can be fixed easily by following the listed steps carefully.

CMOS Battery may not be functioning properly

If you suspect that your CMOS battery is not functioning properly, you can easily change it. Before changing your battery, reboot your computer to make sure that the error still exists. If it does, go into your CMOS and write down all of the settings. If all the settings are lost, you can usually retrieve them from your computer manufacturer. Now locate the battery and remove it, you might need to consult your computer's manual or technical support to remove your battery (the battery a flat, shiny silver colored and coin-shaped). Take down the CMOS battery's information such as volt, size, etc. Once you have your new battery, you can replace it and reenter your CMOS settings. If your battery was the cause of the CMOS Checksum Bad Error, you should have solved the problem.

Your BIOS may have been updated

If your BIOS have been updated recently, your CMOS settings may have reset. Make sure that the values entered in the BIOS are correct or simply reset them to the default settings. If you believe that a virus has updated your BIOS settings, run a virus scan and make sure that the BIOS settings are back to the default.

The Computer may not have been shut down properly

Sometimes when running MS Windows, if you shut down your computer without first properly shutting down your operating system, it will corrupt the CMOS settings causing the CMOS Checksum Bad Error. You can easily avoid this error by making sure that you completely shut down your computer properly before turning off the main power. Usually this entails going into the Start Menu, clicking on Turn Off Computer/ Shut Down. If improper shutdown was the cause of the error, you may have solved the issue.



akuma_ryu21 rate it pls!!

Jan 21, 2011 | Computers & Internet

1 Answer

Cmos checksum error & keyboard not function


CMOS checksum errors
Explanation: A checksum is computed as an error-detecting code, to protect the BIOS settings stored in the CMOS memory. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, an error message is generated to tell you that the CMOS memory contents may have been corrupted and therefore some settings may be wrong. BIOSes react in different ways to encountering this sort of error. Some will warn the user and then continue on with whatever settings were in the CMOS. Others will assume that the settings that were in the CMOS were corrupted and will load default values stored in the BIOS chip "for safety reasons". The error message will indicate which your system is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.
Recommendation: Follow the instructions in this section to address the CMOS corruption. You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent BIOS settings backup).

Sep 24, 2010 | Computers & Internet

2 Answers

Came home computer was on black screen and now it won't reboot. When I try to reboot, I get a "cmos checksum error ". Keyboard also isn't working. What could be the problem?


The CMOS checksum error occurs when the CMOS battery is worn out and the CMOS data gets corrupted. Replace the CMOS battery, this battery most likely a CR2032 lithium coin size button battery - check to make sure before you purchase.
After replacing with a new battery, then go to the BIOS configuration and set the Time & Date etc.

Sep 02, 2010 | Gigabyte 7VM400M-RZ (GA-7VM400M-RZ)...

1 Answer

Will not boot up. Get Bios Rom Checksum error, Keyboard error or no keyboard present. Manually shut down and turned on literally 30 times this morning before it would boot up. Then after a couple of hours...


most times a checksum error refers to the cmos battery. you may want to replace the battery and see if that helps. However this can also be a symptom caused by a bad power supply or a faulty board. Make sure you check your motherboard's capacitors for swelling or leaking.

hope this helps.

Dec 10, 2009 | HP Pavilion m7480n (882780389410) PC...

1 Answer

Microsoft Wireless Keyboards 6000v3 loss of BIO's on computer


You need to completely shut down your system. Power off. Unplug the power cord for 3 or 4 minutes. Plug the cord back in and try again but I would do so the first time without the new mouse and keyboard. Checksum errors are ram memory errors most of the time. the ACHI Bios error is bad new also. I think one or more of the new devices is bad. They could have a dead short in them that is causing severe problems with your PC that if it continues could cause some real damage.

Jun 01, 2009 | Microsoft Wireless Laser Mouse 6000 v2.0

5 Answers

Bios check sum error


You can try flashing/updating the BIOS if nothing works.

Nov 28, 2008 | Computers & Internet

1 Answer

Bios ROM checksum error


The rom you used to flash the bios may not have been the correct one for your mobo, or it did not complete the flash entirely. Try using the usb a drive to flash it again and/or revert back to an older version.

Aug 01, 2008 | Foxconn P4M9007MB-8RS2H Motherboard

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