Question about EliteGroup P4M800PRO-M Motherboard

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CMOS checksum bad

Everytime I start my pc, there's always this error message that saysCMOS checksum bad, and I have to set the date and time again and again.I already change my bat twice. Can someone help me about this problem??? pls...

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Check your battery connections sometimes when you change battery the connectors get distorted and do not connect properly.
Also check all M/board power conections

Posted on Nov 04, 2008

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Compaq Presario 2500 stopped loading windows XP with a prompt STOP: c0000221 {bad Image Checksum} The image COMCTL32.dll is possibly corrupt. The header checksum does not match the computed checksum.


This error is not the same as a CMOS Checksum Error, which refers to corrupted values of the CMOS settings, the ones you set through the BIOS setup program. This error means the contents of the BIOS code itself are damaged.

During the boot process you will see on the screen to press delete to enter setup
Press and hold delete during the boot up process to enter BIOS you can load failsafe defaults or load optimized defaults ,press escape then press f10 to save to cmos to restart
click start control panel date and time you can make your adjustments to the date and time from there also right click on the date and time on the bottom toolbar (bottom of screen) you should see Adjust date and time tab
hope this helps you

Sep 09, 2011 | Compaq Presario 2100 and 2500 ,NX 9000...

1 Answer

I used jumper bios reset and now gettin bad checksum error. on the mother board writen that K8N rev 1.01 i downloaded k8n motherboard rom file and renamed as k8n.rom and copied to disket. its deleting and...


Hi.

The most probable reason you are getting the bad checksum error is you have to set the date and time because you have cleared the CMOS and reset the BIOS.
You should also get a message that says press F1 to load defaults or press a certain key to access setup. Access setup (BIOS) and set the date and time. That should take care of the bad checksum error.
Another good idea is make sure the motherboard battery is not dead either.



Regards.

Jun 17, 2011 | ASUS Computers & Internet

1 Answer

When i switch the ups power on my pc automatically starts and the the BIOS setup page comes and in it,it is written CMOS checksum error and asks me to set the time.even after setting everything when i...


Sounds like you CMOS battery is FLAT, please locate and replace, it is a 3.6V flat "Cell" This may just sort you out. Checksum error is because, something is different from the stored checksum it has in memory.

Mar 25, 2010 | Computers & Internet

2 Answers

Cmos checksum error defaults loaded


Make sure the battery your using is brand new. If it is then go ahead and get into the Bios and make sure the date and time is set properly. Once you do that then go ahead and save the changes and exit.

After this go ahead and see if the CMOS exit checksum defaults comes up if not then go ahead and turn off the computer and unplug it. Then after about 5 minutues plug the computer back up and turn it on and if the message doesn't come up then its resolved.

If the cmos checksum error comes back up then try a brand new battery, should be a 2032 battery and then go thru the same steps in setting the date and time and save changes and exit and if the message doesn't come back then unplug the system again and leave it unplugged for 5 minutes. Now plug it back up and if the message stays away the problem is resolved. it the message comes back then that means the motherboard isn't reconizing the batteries and the motherboard would need to be replaced.

Jun 29, 2009 | MSI KM4M-V Motherboard

1 Answer

Bios date and time problem


You need to replace the cmos battery in your computer. Theu are usually Cr2032 batteries which you should be able to pick up for about £1.

unplug your computer and open the case.
When you look at the motherboard you should be able to easily locate the cmos battery cliped onto the mobo.
Take the old battery out and insert the new one.
put the case back on and plug the pc into the mains again.
You will need to re-enter the date etc the next time you boot up, but the settings should be retained after that.

Ian

Mar 09, 2009 | Dell OPTIPLEX GX150 PIII-1.0GHz 256MB 40GB...

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-defaults loaded..........how do i fix this ????


This is likely because the CMOS battery on your motherboard has gone bad. It needs to be replaced. Usually it is a CR2032, available most anywhere. After installed, you'll get the message again, just go into BIOS and set your date and time and then you won't see it anymore.

Thanks and please take a moment to rate as fixya. Thank you.

Jul 08, 2008 | Computers & Internet

1 Answer

Cmos checksum error-defaults loaded........how do i fix this ??????............Janet


This is likely because the CMOS battery on your motherboard has gone bad. It needs to be replaced. Usually it is a CR2032, available most anywhere. After installed, you'll get the message again, just go into BIOS and set your date and time and then you won't see it anymore.

Thanks and please take a moment to rate as fixya. Thank you.

Jul 08, 2008 | Computers & Internet

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

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