Question about EliteGroup NFORCE4-A939 (NFORCE4A93910) Motherboard

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Pc bios battery faulty

The battery on the M/B does not work even a new battery would not work I need to enter bios to keep date right, what is the best I can do.?

M/B NFORCE4-939 using Win xp64 only 3 year old.
Henry Jozefowski

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  • Christoffer Petterson May 11, 2010

    have you tryed cleaning the connecting surface where the batteery sits?

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Hi there check board for bios reset normally jumpers that have to be shorted,you must also disconnect power plugs from sockets normally 24 pin and 4 pin for about minute,reset bios on board for few seconds
put bios back as it was reconnect power plugs,reboot to get into bios on screen normally hit DEL button or what your screen tells you ,enter cmocs screen change date etc and check all devices are detected then save when your finished and should boot on its own

Posted on Jan 08, 2009

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Sir, please my asus a7v400-mx time and date get missing everytime i boot my pc even when i replace a new battery. please help


HAVE YOU DONE SETUP.?GO IN TO BIOS SET RIGHT TIME.
PUSH F10 FOR SAVE.NOW PUSH THE ENTER-TANGENT
THE COMPUTER WILL RESTART WITH THE SET TIME.

Aug 13, 2013 | ASUS A7V400-MX Motherboard

1 Answer

When i unplug the power cable it lost all bios settings


Hi Rahul,

The most common cause for this problem is the CMOS battery on the motherboard which is faulty or dead. The battery is there to keep the time, date and BIOS settings in tact when you unplug the PC.
You can buy a new battery at your local PC store and replace the old one. These batteries are not expensive and is worth trying.

Best wishes,
Graemevm

Jan 09, 2012 | Asrock P4I45GV...

2 Answers

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

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


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.

Mar 22, 2011 | Asrock P4I45GV R5 Motherboard

1 Answer

Bios date is not being saved


it has to be the battery contacts, the motherboard is loosing contact with the battery which is why it keeps resetting itself

Jul 06, 2010 | Motherboards

1 Answer

Sometimes, when booting-up, the BIOS screen set-up


The motherboard battery is dead. Look on the board for a silver disk about 1/2 inch in diameter, that is the motherboard battery. It is usually held in place by a small spring affair and is easily removed and replaced, your local pharmacy or watch maker should have new ones in stock.

Nov 02, 2009 | ASUS P4S800 Motherboard

1 Answer

System time resets


Either the battery which has been replaced is faulty else it is not seated properly. Also after replacing the battery, clear the BIOS and then re-enter the settings starting with default settings and then changing it as required. If the battery was to work then this loss of date & Time won't happen every time. Also look for the Jumper meant for flashing the BIOS, I hope it is in its correct position............sodeep

May 02, 2009 | Intel D865GBF Motherboard

1 Answer

Bios


Hi, if you're system does not keep the correct date & time it is possible the cmos/bios battery on the motherboard has reached it's max life span. The bios battery recharges only when the system is on. In many cases even when the system is on & you correct the date & time & notice the time is off the battery needs replaced.
92208a8.jpg How to replace cmos battery:
http://www.computerhope.com/issues/ch000239.htm

Good luck!

Mike

Aug 01, 2008 | Intel Motherboard

1 Answer

Bios problem for A7V400-MX


On this ASUS motherboard just beside the Lithium Battery for CMOS an SMD transistor needs to replaced . Sorry I can't remember the component number as well as the legend numbersince I do not have that motherboard with me anymore , but mind you IF YOU DO NOT HAVE EXPERIENCE WORKING WITH SMD COMPONENTS DO NOT ATTEMPT TO REPLACE THE TRANSISTOR AS YOU MIGHT END UP DAMAGING NEIGHBOURING COMPONENTS AND DAMAGING THE MOBO BADLY.

May 06, 2008 | Motherboards

1 Answer

Bios problem for A7V400-MX


Make sure that the battery contacts are good. If they are then you then are experiencing a faulty BIOS chip. try reflashing the BIOS. If this doesnt work, replace the board.

Jan 25, 2008 | ASUS A7V400-MX Motherboard

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