Question about ASUS A8N5X Motherboard

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CMOS checksum error

No reset and is not load

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Can you leave a better description of the problem?, are you getting 'cmos checksum error' msg when you startup? If so, this is normal after removing the CMOS battery and replacing, it should only display error msg after 1st start then no more...

Posted on Dec 30, 2008

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SOURCE: Bad BIOS checksum.... CMOS bad checksum errors

u need to chnage the c-mos battery>and try this first unplug teh c-mos battery and replug it and check if its not works then chnage it rate me solved if its helps thx

Posted on Nov 15, 2007

  • 87 Answers

SOURCE: CMOS Checksum Bad

bios update might fix the problem http://support.asus.com/download/download.aspx?SLanguage=en-us

if da above link doesnt work check dis alternate link but i am sure it'll work

http://drivers.softpedia.com/get/Other-DRIVERS-TOOLS/Asus/Asus-P4P800-SE-Afudos-BIOS-update-tool-226.shtml

Posted on Nov 18, 2007

  • 1 Answer

SOURCE: CMOS Error

If your CMOS batt is ok, then try flashing your BIOS

Posted on Feb 08, 2008

steve6375
  • 395 Answers

SOURCE: Asus P4B Motherboard

Press DEL to enter setup and set Reset to Defaults in Exit menu. If you have USB keyboard, make sure you enable Legacy USB and USB keyboard settings, save and exit and reboot.

Posted on Aug 08, 2008

benwabnick
  • 2404 Answers

SOURCE: 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.

Posted on Jun 29, 2009

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Dell Inspiron 530. At start up gives CMOS checksum error defaults loaded. Options press F1, F2 or F12 computer does not react. Has new CMOS battery. RAM OK. Did CMOS clear and password reset. What else can...


When a Power Supply is plugged into power, there is a constant 5 Volts present. The 5 Volt Standby Power.

You press the Power On button.
This in turn presses against the Power On switch, located inside it's plastic assembly.

The Power On switch is a Momentary Contact Switch.
Temporary closing it activates the Soft Power On circuit.
A 5 Volt circuit that utilizes the 5 Volt Standby Power.

The Soft Power On circuit 'excites' the Power Supply, and turns it on.
(Sounds like a seedy novel)

The first chipset (Integrated Circuit) to receive power is the BIOS chipset.
The Basic Input/Output System program is initialized.

BIOS looks to see what devices are connected, does a Ram Memory count, turns the Processor on, and hands the computer over to the Operating System.

A checksum is computed as an error-detecting code, to protect the BIOS settings stored in CMOS.
Each time the computer is turned on, this number is re-computed; and checked against stored values.

If they do not match an error message is generated, to tell you the CMOS memory contents may have been corrupted; and therefore some settings may be wrong.
Your BIOS assumed the settings were incorrect, and loaded BIOS default settings; stored in BIOS.

(Default = factory settings)

CMOS Checksum Error Defaults - Loaded

New battery? Nope didn't help.
Clear CMOS, and password reset? Nope didn't help.

Leaves Virus as the problem, or hardware component/s on motherboard; are bad.

My thoughts?
Bad motherboard.

("BAD motherboard. NO,...........you know you have been bad,....don't give me that look. You're a bad motherboard."

Lol!)

That's my diagnosis.


(Unless you put the CMOS battery in upside down.
+ goes UP)

Regards,
joecoolvette

Mar 17, 2013 | Dell Motherboards

1 Answer

Cmos checksum error-defaults loaded


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.

The BIOS ROM chip on the motherboard is probably faulty.
It could also be another component on the motherboard.

Make sure the battery has plenty charge or remove the battery for a while, about 5 minutes to see if that restores it some motherboards cmos batteries are soldered in

You could check the site for the machine vendor to see if there is a reset jumper.

If that doesn't work then you will need to refresh the BIOS


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


If you have reset the CMOS memory you need to go into the BIOS setup screen and reconfigure the BIOS.

To do that you need to press a key while the computer is booting Usually the Delete or F2 but can be other keys
It should tell you on the bottom of the first screen which key to press to enter BIOS setup.


If you don't know the settings the should be one for optimal defaults - use that one.
You will also need to reset the time and date.
.

In the main or system setup screen you should be able to see the date and time Using your arrow keys navigate to the date and change the date. Once highlighted on the month, day, or year, press your arrow keys or your page up / page down keys to change the date.

Press F10 Save, Exit and re-boot and everything should then work
hope this helps

Aug 03, 2012 | Dell Motherboards

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 Motherboards

1 Answer

Ref GA-81PE1000L Error message on boot up


all the computer bios settings are stored even when the computer is off (like time and fsb)

these are stored due to the help of a cmos battery

when this battery finishes it gives the CMOS Checksum error Default loaded error

all you need to do is replace the cmos cell

it is a mercury cell (looks like a silver coin) and will be placed on your motherboard

it is very very cheap so go buy one and replace it and be happy

Sep 30, 2009 | Intel Motherboard

1 Answer

CMOS Error


Are the CMOS batteries good?

Oct 15, 2008 | Biostar P4M80-M4 Motherboard

1 Answer

CMOS checksum error


rahul23petit

"CMOS" checksum error default loaded" means ur mother board cmos battery fail (which is locate at mother board), to solve this problem replace it by new one (u can buy it form any computer accessories shop). all oher problem happen for it.

Jul 06, 2008 | EliteGroup BKi810 Motherboard

6 Answers

CMOS Error


If your CMOS batt is ok, then try flashing your BIOS

Jan 24, 2008 | Mercury P4VM800M7 Motherboard

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