Question about Compaq Armada M700 Notebook

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CMOS BATTERY Battery of the motherboard, i can't find it in my PC, how could i replace it

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  • Anonymous Apr 04, 2008

    When powering on my Compaq Armada M700 laptop, I get 8 flashes of the amber top front light that usually is on solid when battery is charging. What does this indicate is the problem. System will not power on when this happens.

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Try this link. the CMOS battery is under the Modem, open the modem cover, remove modem.

Or if you have other issues try this.

Posted on Mar 27, 2008

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Posted on Jan 02, 2017

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Replace cmos battery of optiplex 740


hello
Here is how the cmos battery looks like(look at video) at 2:15 running time of video shows you the cmos battery that is simular to a big watch battery. here a link for battery
http://www.ebay.com/itm/Dell-OptiPlex-Desktop-New-Motherboard-Lithium-Battery-Bios-CMOS-3V-Clock-CR-2032-/200692910229?pt=LH_DefaultDomain_0&hash=item2eba3ac895

Feb 22, 2013 | Dell OptiPlex 740 PC Desktop

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How to change mainboard battery?


Most PC users don't think much about the CMOS battery until their computer shows signs of losing its BIOS settings on boot up. If you tend to upgrade rather than replace your PC, replacing the CMOS battery every couple of years makes sense.
Likewise, if you purchase a used PC, battery replacement is a good idea unless the PC is less than two years old. It's just one more preventive step you can take to prevent troubles in the future.
If you have never replaced a CMOS battery before, you can find step-by-step instructions below.
In most cases, frequent CMOS errors are a sign of a dead battery. The CMOS battery maintains your settings while your PC is powered off. You can easily replace the battery yourself.


Instructions:
  1. Boot your PC and enter its setup mode.
  2. Write down all of the settings from the various BIOS menus. Click this link to learn more about this procedure.
  3. Power off your PC.
  4. Open the case of your computer
    cmosreplace_1.jpg cmosreplace_2.jpg Figures 1-2. Undoing the screws on your PC case. cmosreplace_3.jpg Figure 3. Opening the case of your PC.
  5. Locate the battery on the motherboard.
    cmosreplace_4.jpg Figure 4. Battery location on the motherboard. The layouts of the components differ on different motherboards, so you'll have to consult your motherboard user manual for specifications about the battery and its location.
    This is a close-up view of the battery on the motherboard.
    cmosreplace_5.jpg Figure 5. Typical CMOS battery. The most common type of batteries used in modern PCs is coin-shaped lithium/manganese-dioxide battery that looks like a large watch battery.
  6. Obtain a replacement battery from a local or online computer parts dealer.
  7. Remove the old battery.
    cmosreplace_6.jpg Figure 6. Removing the old battery.
  8. Replace it with the new one, as shown on the picture below.
    cmosreplace_7.jpg Figure 7. Replacing the battery.
  9. Document the date of replacement for future reference.
  10. Replace the case and power on the PC.
  11. Enter the setup mode of your PC.
  12. Reenter the settings you have written down from the various setup menus.
Tips:
  1. Don't forget to observe proper anti-static precautions when working inside the case of your PC.
  2. If you can't see your battery right away, try removing expansion cards or unplugging cables. The majority of newer motherboards use lithium batteries that look like large watch batteries.
If the battery is already dead and you receive messages saying "CMOS checksum error", skip Step 1 and Step 2.

Sep 03, 2011 | Fujitsu Siemens JETSON POWER (J815-E2F) PC...

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I have an intel g41 motherboard....every time i switchon d pc...it shows check cmos error and the time and date are set to defaluts


This error occurs when the BIOS battery is flat. Replace the BIOS battery, most motherboards use a lithium battery type CR2032, this is a coin size battery. Check the BIOS battery type used on your motherboard before you purchase the battery.
After replacing the battery go to the BIOS setting and set the Date & Time etc. and you will not have this CMOS error.

Aug 10, 2011 | Intel Motherboard

1 Answer

When i open it said time off day clock stopped


Problem is with either the CMOS Battery or the Motherboard.

You can reset the CMOS battery.

You can replace the CMOS battery but if laptop is under warranty request for the Motherboard to be replaced.

If laptop is no longer under warranty I would suggest ask a local technician to have the CMOS battery replace which is less costly than replacing the motherboard.

Hope this helps.

Jun 02, 2011 | Dell Inspiron 1525 Notebook

2 Answers

Came home computer was on black screen and now it won't reboot. When I try to reboot, I get a "cmos checksum error ". Keyboard also isn't working. What could be the problem?


The CMOS checksum error occurs when the CMOS battery is worn out and the CMOS data gets corrupted. Replace the CMOS battery, this battery most likely a CR2032 lithium coin size button battery - check to make sure before you purchase.
After replacing with a new battery, then go to the BIOS configuration and set the Time & Date etc.

Sep 02, 2010 | Gigabyte 7VM400M-RZ (GA-7VM400M-RZ)...

1 Answer

Cmos battery failure even after changing the battery


may be the replaced battery is not working too. please try another battery or first make sure, the battery you placed is working ok.

May 24, 2009 | Intel Motherboard

1 Answer

I am working on a inel. The 5V light on the MB was blinking and of course, the PC wouldn't turn on. I replaced the P/S and the issue seemed solved - now the 5V light is on steady but the PC has an issue...


It sounds like your CMOS Battery is dead. As soon as you power down, your cmos loses it's information, however, keeping the battery in the motherboard completes the circuit and prevents it from restarting. Your best bet is to look what kind of battery your CMOS runs off of, this is common amongst almost all motherboards, albeit I can't remember which one it is off the top of my head. Anyway, Buy a new battery and replace old CMOS battery with new one. This should resolve your problem. If you still have problems after this, your motherboard might be damaged and you should look into getting it repaired or replaced. I hope this helps.

Mar 30, 2009 | Intel Motherboard

1 Answer

Pc can't boot up , no display , hdd led is constatly lighted


Check CMOS battery(Coin shaped battery), it should show 2.5-3V, if not then replace and check, you can even try and test the mbd without the CMOS battery. Some mbd does not boot with a faulty CMOS battery.

Mar 17, 2009 | MSI K8MM-V Motherboard

2 Answers

Checksum error


Hi robynonis
Yes, definatly the cmos battery. Please make sure you replace with same type battery.
Regards Go-Tech

Dec 22, 2008 | ASUS P4PE Motherboard

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