Question about MSI P4M900M-L Motherboard

1 Answer

CMOS Checksum Bad message

Upon booting my system after an MSI bios flash upgrade (3.0 to 3.1) I now get the message that my CMOS checksum is bad. I can hit F1 to continue or F2 to restore my defaults. I have removed my CMOS battery for several minutes and replaced it. That didn't work. I also moved my JBAT jumpers from 1&2 to 2&3 and returned to 1&2 - that didn't work. What else - short of taking my system to a repair shop - can I try to get rid of this error?

Thank you.

Posted by on

  • Anonymous Mar 17, 2014

    Suddenly my PC doesnt turn on, i think its cmos battery as it has been 7 years working hard:) the problem is that i cant identify the battery. Can u help me with this pls?

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 2,794 Answers

If you have another computer download the previous BIOS update of version 3.0 and see if that works.

Posted on Jul 15, 2008

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Good day. I have a Gateway m-1625 (reconditioned). About 5 months ago it started to give problems when booting up. When powered on the hard drive would be engaged & then it would shut off. After...


check the BIOS version, if there is an update for it on the gateway site apply it. a checksum error in CMOS BIOS cannot be overcome and you will always have to deal with this issue if no bios updates are available. There is a slim chance that you can revert back to an earlier version.

Mar 07, 2017 | Gateway M-1625 Notebook

1 Answer

Bios rom checksum error.. system halted


This error comes when there is low cmos voltage so motherboard flash memory forgot the bios settings.
For that open cpu and then pull cmos cell from mother board buy new cmos cell and replaced it.
Then when you power up the computer press F1 or F2 or "del" key to enter in bios and set time and date and boot option in bios then save settings.
Then it works again if it not works then you need to update firmware for your bios .
Let me know if you need further assistance.
Thanks for using FixYa.

Dec 07, 2009 | Foxconn K7S741MG-6L Motherboard

1 Answer

Boots to 'CMOSS checksum error'


CMOS checksum errors
Explanation: A checksum is computed as an error-detecting code, to protect the BIOSsettings stored in the CMOS memory.Each time the system is booted this number is recomputed and checked against the storedvalue. If they do not match, an error message is generated to tell you that the CMOSmemory contents may have been corrupted and therefore some settings may be wrong. BIOSesreact in different ways to encountering this sort of error. Some will warn the user andthen continue on with whatever settings were in the CMOS. Others will assume that thesettings that were in the CMOS were corrupted and will load default values stored in theBIOS chip "for safety reasons". The error message will indicate which yoursystem is doing.
Diagnosis: The most common cause of checksum errors in CMOS is a battery that islosing power. Viruses can also affect CMOS settings, and motherboard problems can alsoaffect the stored values.
You should make sure that all of theBIOS settings in the system are correct, by rebooting the system, going into BIOS setupand double-checking all the values (hopefully against a recent BIOS settings backup).
If you have created a backupcopy of your CMOS settings then use them to restore the settings to the correctvalues. To find the problem itself:

Apr 06, 2009 | Intel Motherboard

2 Answers

Error message


Open Your system and there is a Battery which looks like a Coin. that is CMOS Battery (CR2032) Change that battery and then Reboot your system and try go to BIOS menu with DEL , F11 , F1 or F2. Either of these Buttons can Work.

This will resolve your issue

Nov 26, 2008 | Computers & Internet

2 Answers

Bios checksum error. How to solve it?


If you are using an old computer, there’s a possibility that you already encountered this error message during bootup; “CMOS checksum error – Defaults loaded”. At this point, the PC will halt its operation and requires you to press F1 to continue or DEL to enter setup (mostly but also depends on motherboard) to proceed.

This is caused by incorrect or corrupted CMOS values. BIOS settings are stored in CMOS. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, the error message will be displayed.

For most cases, this is caused by the motherboard battery. Buy a new one to any electronic retailers in your area and replace it. Turn on your computer and press the stated key to enter the BIOS setup. It can be DEL for some or F2 but this depends on your computer. On the BIOS menu, try to change the DATE and TIME settings because their values are reset to different value. Most settings are set to default so leave it as it is. Save the settings and reboot your computer.

Oct 04, 2008 | MSI PM8M-V Motherboard

1 Answer

Cmos checksum error after flashing the bios


I had a similar experience after upgrading my RAM. When you reset your CMOS and have default settings maybe you should check if your RAM timings are correct. I could not get mine to load with both sticks in until I fixed the timings from the default settings.

Jan 20, 2008 | MSI K9VGM-V Motherboard

1 Answer

Want bootup says checksum bad


Usually, the message you are seeing is displayed when your CMOS loses power abnormally. Even when your computer is turned off, there should always be a low-level charge from the battery, keeping track of your PC's clock, and storing information about your BIOS settings.

If the CMOS battery is dying, it will produce a weaker charge, or continuously start and stop providing power, which will trigger that message. as a result, you are losing all your BIOS settings that you are configuring each and every time, and getting that message when it happens.

It's odd that you would be getting that message when you replaced the battery, but I'd try replacing it with another one just to be sure. If it doesn't fix the problem, the motherboard may need to be replaced. In this case, the problem could lie with wireing between the casing and the chip, or even be in the chip on the circuit board itself.

You could also try flashing the motherboard, but only use that as a last resort- you could finish toasting it. Also, I can't guarantee it would fix it in the future, as all you're doing is adressing the symptoms, and forgetting about the cause.

Dec 30, 2007 | MSI K8MM-ILSR 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

Not finding what you are looking for?
MSI P4M900M-L Motherboard Logo

Related Topics:

382 people viewed this question

Ask a Question

Usually answered in minutes!

Top MSI Computers & Internet Experts

vsri9

Level 2 Expert

73 Answers

Alun Cox

Level 3 Expert

2678 Answers

David
David

Level 3 Expert

781 Answers

Are you a MSI Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...