Question about eMachines T2885 PC Desktop

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Cmos battery life

I'm suspecting that my problem is caused by a dead cmos battery. Does that sound right? Incomplete boot up, lost settings, etc. I have ruled out virus, disk error, device drivers and registry errors, etc.

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Yes you are right

Posted on Feb 09, 2012

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Battery dead & BIOS reset. CD & DVD drives lost.


first you will need to replace the cmos on the system board(or have a qualified computer service tech. do it). then you will need to access the bios settings by Pressing F1 immediately after powering on the computer. once in the bios, you can set the correct date and time. Also, you will need to check the drive settings to verify that the hard drive and any CD/DVD drives are recognized. once done, then exit the BIOS being sure to chose "save and exit", then allow your PC to boot normally. this should fix your date and drive issues. if not then the motherboard may be defective.

Dec 29, 2013 | Computers & Internet

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Inspiron 1000 doesn't save cmos settings


Hi

As you said that you haven't used the computer for long time then it could be the motherboard which has gone faulty not the HDD or DVD.
Try to use the new HDD with this old motherboard.
Or else you can seek help of Any Geek Squad or computer vendor.


In case if you have any more trouble do contact back in Fixya.
Thank you

Sep 05, 2012 | Dell Inspiron 1000 Notebook

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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...

1 Answer

HI, I have a IBM Thinkpad R50e and i had a CMOS battery failure. After replace the battery it has now started to ask me to check the date and time and when i press enter it is asking for a BIOS...


Dear john, replacing CMOS Battery usually RESET password ( plug out your laptop battery,then plug out the CMOS battery. keep it out for 5 minutes.)
After 5 minutes by, put back on the CMOS battery. put it back all together. laptop battery the last one.
On the first boot you need to set the time and date. or by pass it by pressing ESC. >> If your Operating System goes >>> right click on clock task bar >>Adjust Date/Time >> set as you wish >> apply >> ok >>>RESTART your unit.

akee_akee@live.com

Aug 16, 2011 | IBM ThinkPad R50e Notebook

1 Answer

My Lenovo 3000-N500(Type 4233-79G) (1.5 Yrs Old) will not boot from Battery or Power Adaptor. Both power sources are OK & when both power sources plugged on to this machine, this laptop displays...


Do any lights come on when you press the power button? If not, did you get all the cables reconnected properly? If lights come on or fans come on when you press the power button, then it sounds like the screen has gone bad. That is the symptoms you are describing.

Jun 26, 2011 | Lenovo 3000 N500 Notebook

1 Answer

Booting problem


There are usually three main reasons that a CMOS Checksum Bad Error has occurred. They include:
  • CMOS Battery may not be functioning properly. The battery life may have expired.
  • Your BIOS may have been updated (either by user or possibly a virus)
  • The computer may not have been shut down properly e.g. shutting off the computer's main power without first shutting down the computer (MS Windows requires you to shut down your computer before shutting off the power).
Solutions to CMOS Checksum Bad Error The CMOS Checksum Bad Error can be fixed easily by following the listed steps carefully.
CMOS Battery may not be functioning properly
If you suspect that your CMOS battery is not functioning properly, you can easily change it. Before changing your battery, reboot your computer to make sure that the error still exists. If it does, go into your CMOS and write down all of the settings. If all the settings are lost, you can usually retrieve them from your computer manufacturer. Now locate the battery and remove it, you might need to consult your computer’s manual or technical support to remove your battery (the battery a flat, shiny silver colored and coin-shaped). Take down the CMOS battery’s information such as volt, size, etc. Once you have your new battery, you can replace it and reenter your CMOS settings. If your battery was the cause of the CMOS Checksum Bad Error, you should have solved the problem.

Your BIOS may have been updated
If your BIOS have been updated recently, your CMOS settings may have reset. Make sure that the values entered in the BIOS are correct or simply reset them to the default settings. If you believe that a virus has updated your BIOS settings, run a virus scan and make sure that the BIOS settings are back to the default.
The Computer may not have been shut down properly
Sometimes when running MS Windows, if you shut down your computer without first properly shutting down your operating system, it will corrupt the CMOS settings causing the CMOS Checksum Bad Error. You can easily avoid this error by making sure that you completely shut down your computer properly before turning off the main power. Usually this entails going into the Start Menu, clicking on Turn Off Computer/ Shut Down. If improper shutdown was the cause of the error, you may have solved the issue

Mar 05, 2010 | Microsoft Windows XP Professional With...

5 Answers

How can i tell if the cfmos batterty is dead or


The computer time will not be correct at all times

Jul 07, 2009 | E-Machines T6532 PC Desktop

1 Answer

Cmos battery dead - needs to be replaced


Sounds like you need to change the CMOS battery, the time being wrong everytime you boot is a good sign but also it losing its settings in bios is also another sign

Dec 26, 2008 | Dell Inspiron 8500 Notebook

1 Answer

Im getting a boot time error called CMOS error and then i have to enter the sytem date and time every time i start the pc. After that it shows me an error like Invalid System Disk. wht does tht mean?


The CMOS error is caused by a dead motherboard battery. There is a small battery on the motherboard Usually a 2032 battery. The dead motherboard battery could also cause the Invalid system disk because a dead motherboard battery will also cause the motherboard to lose the Hard drive settings.

Nov 12, 2008 | Toshiba 4030CDT (P000271450) Motherboard

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