Question about Asrock P4I45GV R5 Motherboard

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My CPU keeps showing BIOS checksum error when booting up even i changed the battery with a new one

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  • Handi Tang Mar 22, 2011

    i have changed the BIOS battery with a new one, and its still RESET the BIOS when i boot up

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Remove the BIOS battery fr approx. 15mins (this will reset the BIOS back to the default settings) then insert the BIOS battery and configure the BIOS Date and Time etc.

Posted on Mar 22, 2011

Testimonial: "i have tried that, but when i powered down, it happen again. seem the motherboard was error on charging the bios battery"

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Posted on Jan 02, 2017

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1 Answer

P4M900T-M2 Intel Pentium R dual CPU E2160 1.8 Ghz default BIOS Setting


The CMOS Checksum Bad Error during the pre-booting process only indicates that the CMOS battery is exhausted and it can not no longer save the current BIOS settings, Time settings and many more things.

The first and and the only way, according to me, to solve this problem is to replace the CMOS battery.

Please let us know, if this solution have helped you.

Hope this helps, Mrityunjay.

Jun 18, 2012 | EliteGroup ECS P4M900T-M2 Socket 775...

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Hello, when I put my pc running it says CMOS checksum error press F1 to enter or Del to enter setup, but I press Del when I save changes "save and exit" the computer restarts, but this time...


The Checksum error basically shows that boot settings which were previously set has been changed or reset. This usually happens when the battery loses its charge and thus fail to retain the CMOS settings. This can also be caused by a power surge or a damaged motherboard. But most of the times it would be the battery problem.

You can try replacing the CMOS battery and enter the values back into CMOS or reset values to default. Then switch off and boot up again.
Hope this works. Good Luck. ~SmokinJoe~

Apr 28, 2011 | EliteGroup KM400-M2 Motherboard

1 Answer

AFTER SWITCHING ON, SCREEN STAYS FROZEN AFTER SAYING CMOS CHECKSUM ERROR- DEFAULTS LOADED


Hi there,

When starting your PC, the following error message is displayed:

CMOS wrong
CMOS MEMORY size WRONG
CMOS Checksum Bad
CMOS checksum error defaults loaded
Warning! CPU has been changed please re-enter cpu settings in the cmos setup and remember to save before quit!
You are prompted to:

Press F1 to resume
Press F2 to load default values and continue


This is due to the fact that the CMOS, which contain data related to the BIOS, has been reinitialized and that your PC has been reset to factory settings.

Solutions:

Reinitializing the BIOS
  • Change BIOS battery
    • If the problem persist this may be due to the fact that the battery powering the CMOS (when the computer is shut down allows the CMOS to store information), is depleted.
    • The CMOS battery is a small pin found on the mother board, you can refer to the manual provided with your motherboard to change it or have the nearby computer technician change it for you if you don't want to risk any damage.
    • More information with: Replacing the battery of your motherboard (CMOS battery)
Post back if it is not working we will be happy to help you.
Hope this helps.
Cheers!!!!

Jan 12, 2011 | Sharp Actius PC-RD10 PC Notebook

1 Answer

Always start up with cmos checksum error, cpu ratio has been change


A BIOS checksum error is most likely caused by a flat BIOS battery.
Replace the battery with a new one (it is usually a coin size battery - type CR2032) and then boot up and go to the BIOS configuration and set the Date & Time setting etc.

Jun 30, 2010 | MSI K8MM-V Motherboard

1 Answer

DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER... i have a mother board K7S741MG-6L, bios version 426wp225, i have this problem BIOS CHECKSUM ERROR , KEYBOARD ERROR or NO KEYBOARD PRESENT (which is...


your hard disk is disconnecetedor loose . pls check the hard disk power cable & IDE or SATA cable. Then check BIOS hard disk detected or not if hard disk is not detected your hard disk is faulty.

Dec 11, 2009 | Foxconn WinFast K7S741MG Motherboard for...

1 Answer

Hard Drive will not boot in Compaq Presario C700


BIOS checksum errors occurs when either the BIOS chjp is faulty or most likely the BIOS battery is nearly flat and the stored info changes and doesn't match the checksum info.
Replace the battery with a new one, leave the battery out for 1/2 hour before inserting the new battery. The BIOS will be reset to the default settings, you need to configure it again eg, datr and time etc.

Feb 22, 2009 | Compaq Presario C700T Notebook

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

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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