Question about ASUS P5RD1-VM Motherboard

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Cmos battery is dead

I have an emachine notebook model number w4630 and the cmos is bad. want to replace it but can't find it. any suggestions?

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  • maxgal Jan 25, 2009

    Do I have to take apart the whole computer?


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You will need to open the laptop from the bottom the battery is on the boare very simple to replace it could be one of two batterys cmos battery is dead - ffc4efc.jpg the second battery is incased in yellow or blue plastic with to wires helping it to sit in the conputer better

Posted on Jan 25, 2009

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Round metal watch style battery on the motherboard about the size of a quarter... walmart would probably have them in the watch dept.

careful removing the battery so you don't break the clip that holds it in.


Please take a moment to rate this solution.. thanks

Posted on Jan 25, 2009

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I'm faced with a black monitor, no boot beep, with an operating fan and green light on. XP OS with an ASUS P5P800S motherboard, Thanks Jose

Remove all components from your mb and bios battery. Place jumper to clear cmos and make short to battery cmos. Leave 1min and after place cpu and one ram in mb. Replace jumper from clear cmos in normal position and verify. If not display, change ram.

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Where Can I find a screenshot of the motherboard on my netbook?

There it is!

Needed to know WHAT Netbook we're talking about here.....

Problem is the info only brings it down to,.....oh,.........about 7 different Acer Aspire One models, (At 8.9 inches)
That may be a low estimate.

Akin to, "I have a Ford Ranger, and need spark plugs for it."
Question that would come back is, "What engine size is in it?"

So my question is, "What is the Model Number of the Acer Aspire One? It's on the Bottom of the Netbook."
Otherwise you get generic information...........

As asked for;


CMOS Battery is also known as the RTC Battery.
Real Time Clock Battery.
For the above motherboard photo, it is to the upper Left, and near the white long plastic part, above it.

Right below it is a small round Black piezo style of buzzer.
Watch style type of battery, and is either a CR2032, or a smaller style.
Believe it to be on the Top of the motherboard, if memory serves.


Left side/Middle
Usual round watch style battery.


In photo, top of motherboard slightly off center to the Right.
Next to what looks like a small black round Piezo style buzzer.

Indication CMOS battery needs to be replaced?
Message, or Time/Date changes?
Replace the CMOS (RTC) Battery.

Trying to circumvent a password, by removing CMOS battery for a short period of time?
Don't think so. Believe there is a Capacitor, or Capacitors; that hold a trickle charge INDEFINITELY.

Suggest use an ESD wrist strap when working inside the netbook.
Otherwise you will Static shock out the delicate hardware components inside the Netbook.

Just videos that may help your endeavor,



For additional questions please post in a Comment.

Apr 01, 2013 | eMachines Computers & Internet

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Can you remove cmos Battery from acer aspire 7520

See then select your Acer Aspire 7520 which will then give you access to the User Guide for this laptop.
In the User Guide - under Troubleshooting Tips and Error Messages it says:Error messages Corrective actionCMOS battery bad Contact your dealer or an authorized service center.CMOS checksum error Contact your dealer or an authorized service center.
This suggests that you would need to take your laptop to a dealer or service centre to get the CMOS battery replaced which would be advised if the laptop is still under warranty.
The alternative would be to open any covers on the underside of the case and see if your can see a small button cell type battery that you may be able to get a replacement for. Please note that you should remove the main battery before opening the laptop case and ensure that you ground yourself to avoid damaging any components with static electricity from your clothing etc.

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No beeps,no cmos setup, its dead.

Not knowing how old it is, 2 things come to mind; a bad power supply or a bad CMOS battery. A bad CMOS battery would have failed to record the "last good configuration". Check the PS for any power at all ie fan turning, any lights etc

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Cmos settings error system hait,

You will need access to another computer and go to:, choose you country, then "Download", the on the next page, "Download" again. Select you "Product, Series and Model". Motherboard, Socket 478, P4P800-SE click "Search". Then choose you operating system. You will get to the page where you can download the latest BIOS, and install program. Read how to upgrade your BIOS and follow the directions carefully.

I suggest you also change the CMOS battery before you upgrade to make sure a dead battery is not the cause for the CMOS corruption.

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Your NVRAM was corrupted (probably by a dead CMOS battery) or your hardware configuration has cnaged (deah boot disk, etc). Enter setup to see if the date/time has reverted to a previous date. If so, the CMOS battery needs to be replaced and the BIOS reconfigured for the server. Otherwise, check to ensure that your disk configuration is correct. If the battery is not dead and your disk configuration is incorrect, you may have a bad hard disk.

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I have an emachine w4630 notebook. i can't find the cmos battery which needs changed. do i have to to take the back off my computer?

I do believe you may have to partially disassemble to get at battery. I have found the manual on line that you can download at the below address:

the manual shows you where battery is located and how to change it.
took a bit to find, please be so kind as to take the time to rate this answer. good luck and thanks

Jan 25, 2009 | ASUS P5RD1-VM Motherboard

1 Answer

Beep sound

Can you tell me what motherboard brand or chipset you have ?


Intel , nvidia , via

also I would need to know the exact numbers such as

intel440bx or lx , nvidia nForce2 , via VT82686A or B

Or you can simply tell me a brand name

eMachine , Compaq , Dell , Toshiba , or Gateway

and the specific model number.

Then I can help you.

Aug 26, 2008 | Computers & Internet

1 Answer


Sometimes this problem happens when your CMOS battery already dead. Replace the CMOS battery and run F4 to setup the date and time. Save it and you back to business.

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