CMOS bad how change CMOS battery

Add Your Answer

Upload

Upload an image from your computer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

Loading...

Include an image. It's worth a thousand words.

prev next

Related Questions:

0helpful

1answer

My dell inspiron 530s' date is changing back in 2007 which is the year when I purchased the computer. How can I stop it from doing so? Changed the CMOS battery already.

Are you sure it was a good battery, same spec, inserted correctly. Shut down Computer, Unplug from AC, double check everything.

Read full answer

Dec 15, 2012 • Dell Inspiron 530s Desktop Computer...

tip

CMOS Checksum error

Issue:
CMOS Checksum Bad or CMOS Date/Time Not Set

Cause:
This issue is caused when the CMOS values are incorrect. This issue can occur because of any of the below possibilities.
* Bad or old CMOS battery.
* BIOS update.

Workaround 1:
1. Disconnecting power from computer without shutting down computer.
2. Attempt to reboot the computer. If error still occurs after rebooting the computer enter CMOS setup and check all values, this includes verifying the time and date are correct. Once everything has been verified and/or changed make sure you save and exit CMOS setup.
3. If you have a Phoenix BIOS and have an option for 'Reset Configuration Data', set this value to 'Yes' and save and exit the CMOS.
4. If the computer was had the power disconnected while it was still running it is possible this could cause the CMOS to become corrupt. Ensure that the computer is ready to be shut off before turning off the computer. If you have a laptop computer ensure that the battery is charged before disconnecting the power connection.
5. If the CMOS values have become corrupted entering the values in CMOS setup and saving and exiting CMOS should resolve your issues.
Note: If this issue continues to occur after you turn off your computer off it is possible that the CMOS battery may be failing or already bad. Before considering replacing the CMOS battery try leaving your computer on for several days.
Workaround 2:
If you performed workaround 1 and the error occurs again after a complete power down (i..e. removing the power cord), the CMOS battery is likely bad. Most systems use a small coin style lithium battery. These often last 3-6 years, but at some point run out of juice and need to be replaced. For desktops, your system manual or motherboard manual should specify the type of battery and location on the motherboard. For laptops, it is often very difficult to access and may require a professional to replace it. To replace the battery on a desktop system:
1. Turn off the system and remove the power plug.
2. Remove the case or side panel to access the motherboard.
3. Look for a round silver coin cell, typically in a black holder.

4. Remove the battery while noting which way the battery is located. You may need a small flat screwdriver to release the side clip.
5. Install the replacement battery with the same battery type, being careful to insert it in the same direction as the removed battery (or using the polarity marked on the holder or manual).
6. Reassemble the case and power.
7. Turn on the power. You will get the CMOS Checksum Bad error once more, but it should be the last time. Go into the BIOS setup and set the date and time, and any other options you prefer.

Read full tip

on May 30, 2010 • Computers & Internet

0helpful

1answer

When to change CMOS battery?

You will need to change the battery just when the computer says something like this "System CMOS checksum bad - Default configuration used" or also could say something like "CMOS battery low", etc. That's the time to change the battery.

Read full answer

Jan 26, 2012 • Computers & Internet

1helpful

1answer

Getting a CMOS checksum bad error when starting my Acer M5640 Desktop with Windows 7 Thanks Daniel

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.

akuma_ryu21 rate it pls!!

Read full answer

Jan 21, 2011 • Computers & Internet

0helpful

1answer

AFTER SWITCHING ON, SCREEN STAYS FROZEN AFTER SAYING CMOS CHECKSUM ERROR- DEFAULTS LOADED

Hi there,

When starting your PC, the following error message is displayed:

CMOS wrong
CMOS MEMORY size WRONG
CMOS Checksum Bad
CMOS checksum error defaults loaded
Warning! CPU has been changed please re-enter cpu settings in the cmos setup and remember to save before quit!
You are prompted to:

Press F1 to resume
Press F2 to load default values and continue

This is due to the fact that the CMOS, which contain data related to the BIOS, has been reinitialized and that your PC has been reset to factory settings.

Solutions:

Reinitializing the BIOS

- Before making any costly maintenance try to reinitialized the BIOS.
Change BIOS battery
- If the problem persist this may be due to the fact that the battery powering the CMOS (when the computer is shut down allows the CMOS to store information), is depleted.
- The CMOS battery is a small pin found on the mother board, you can refer to the manual provided with your motherboard to change it or have the nearby computer technician change it for you if you don't want to risk any damage.
- More information with: Replacing the battery of your motherboard (CMOS battery)

Post back if it is not working we will be happy to help you.
Hope this helps.
Cheers!!!!

Read full answer

Jan 12, 2011 • Sharp Actius PC-RD10 PC Notebook

1helpful

1answer

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

Read full answer

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

0helpful

1answer

Bad cmos dell motherboard

If u changed the CMOS battery then it should not show the f1 continue . first remove your BIOS chip on the motherboard and then replace CMOS battery and then replace it again after 5 minutes. your problem will be solved

Read full answer

Aug 26, 2009 • Computers & Internet

1helpful

1answer

CMOS battery bad

you can change this battery to new one. it is cheap.

Read full answer

Mar 19, 2009 • Computers & Internet

0helpful

2answers

Cmos cheksum bad

From your problem description, it sounds like a corrupt BIOS and or a failing motherboard.

Due to the system age, I'd say cut your losses, salvage what drives are usable, and get a new (or newer) system

Read full answer

Dec 07, 2008 • Computers & Internet

0helpful

1answer

Bad cmos battery

Search in Google for How do I change the cmos battery in a toshiba satellite 5100

Read full answer

Jul 03, 2008 • Toshiba Satellite A100-S8111TD Notebook

Not finding what you are looking for?

View Most Popular

F5R-AP038A Notebook

Computers & Internet

My dell inspiron 530s' date is changing back in 2007 which is the year when I purchased the computer. How can I stop it from doing so? Changed the CMOS battery already.

Dell Inspiron 530s Desktop Computer (ddcwfa2_5) IntelPentium dual-core processor E2160 (1MB L2,1.80G

58 views

Ask a Question

Usually answered in minutes!

Check Out the Mobile Browsers Report

View all Fixya Reports

Are you an ASUS Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Have a manual for ASUS F5R-AP038A Notebook? Or just drag it here!

Related Topics:

CMOS bad how change CMOS battery

Add Your Answer

Attachments: Added items

Related Questions: