Question about ASUS VIA KT133A Chipset A7V133-C Motherboard

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Change battery for bios

How can I reset the bios to default?

Posted by Greg 1234 on


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When the pc is booting press F2 or Del to get into the bios, then in the advanced cmos settings look for default settings, highlight it and press enter then when prompted save the settings and exit for a rebbot.

Posted on Oct 31, 2007


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3 Answers


If you changed the CMOS battery you in effect reset it. On boot up, go into the BIOS setup and check all settings. Even if you don't change any of the BIOS settings, save them as if you did and it will reboot. Should be OK then.

Apr 02, 2015 | Computers & Internet

1 Answer

How to fix bios setting on hp pavilion a6110n

The best way to reset the BIOS back to the defaults (if there isnt a setting to install the defaults), is to remove the BIOS battery for 15mins. This will drain the charge from the BIOS, insert the battery and then go to the BIOS setting to set the Date and Time.

Apr 11, 2012 | HP Pavilion a6110n PC Desktop

1 Answer

I bought a hp pavillion dv600 series, now after 1 yr my battery symbol shows a red cross and notifies me to change the battery. i have done dat but still, problems still survive. thanks in advance


I think you can try these steps to isolate the problem on your machine and also it may help you resolved the problem for your battery being not detected.

Perform Hard Reset

Performing a hard reset erases all of the information that is stored in the temporary memory and forces Windows to do a complete scan of the system, including the battery.
To perform a hard reset, follow the steps below.

1. Unplug the AC adapter from the notebook PC and remove the PC from any port replicator or docking station.

2. Remove the battery from the notebook battery compartment.

3. Press and hold down the power button for about 15 seconds to drain any residual electrical charge from the capacitors.

4. Once started, insert the battery and plug the AC adapter back into the notebook PC.

5. Press the power button to turn on the notebook PC.

6. Use the arrow keys to highlight Start Windows Normally , if it is not already highlighted, and then press the enter key.

Use the software HP Battery Check to test the battery, Once you have login to your PC. If its not working try this.

Resetting the BIOS to default settings

Resetting the defaults in the BIOS removes any possible incorrect valves and returns the BIOS to a known good condition.

To reset the BIOS defaults, follow the steps below.

1. Press the power button to turn on the notebook and repeatedly press f10 to enter the BIOS setup.

2. Navigate through the BIOS and select the option to restore the BIOS defaults. The option will have words like Restore Defaults or Setup Defaults .

3. Confirm that you want to restore the BIOS defaults, and then select the option to save and exit the BIOS setup.

Use again the Battery Check to test the battery. If those steps does not work you try this last step.

Update the BIOS

If resetting the BIOS default setting to the original condition does not resolve the problem, look for and install an updated BIOS. Just go to this link to download the updated BIOS for your machine and choose your Operating System.

If happens those steps did not work mostlikely there is already a problem with the connector of your battery inside the machine.

Hope it helps.


May 09, 2011 | HP Pavilion dv6000t Notebook

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

2 Answers


  • Restart your Sony Vaio computer.

  • Press the "F2" key to enter the BIOS.

  • Use the arrow keys to highlight the "Load BIOS Defaults" menu option. Select it by pressing "Enter."
  • Highlight "Load BIOS Defaults" again and hit "Enter." This will reset all of the settings of your Vaio's BIOS back to their original factory defaults. You can now select "Save Changes and Exit" to exit the BIOS.

  • Dec 09, 2010 | Sony VAIO VGN-FJ270/B Notebook

    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 | Computers & Internet

    3 Answers

    How to reset the bios p4 titan ga-8id533 motherboard

    As the computer starts up hit the Del key, that will take you into the BIOS utility, once in the BIOS load optimized defaults, this will reset the BIOS configuration.
    Failing this just remove the power cord from the back of the computer and take the motherboard battery out for 20 minutes, this will fully reset the BIOS so you will have to input the time and date.


    Jul 14, 2009 | Gigabyte GA-8ID533 Motherboard

    1 Answer

    Clearing cmos

    The BIOS battery maybe under one of the panels on the bottom of the laptop or under the keyboard.
    To reset the BIOS ack to the default settings, go into the BIOS configuration and look at the various configurations, usually there is a setting to load the Default settings, then save and exit, and this would not change the Date & Time setting.
    The other way to set the BIOS default setting is to remove the BIOS battery (it is probably a lithium 3volt button battery), wait 1/2 hour and replace the battery, the go into the BIOS configuration and set the Date & Time setting etc.

    Jul 04, 2009 | Compaq Computers & Internet

    2 Answers

    Bios default password

    The BIOS default password is just blank, and it is not asked.

    When you set a bios password, you are asked to enter a value, therefore if bios is asking the password, the password had been changed.

    To reset the bios password if you do not know the password you need to access to motherboard and temporarily remove battery for few seconds.
    Removing battery will reset bios and delete the password.
    Unplug power cord before accessing the motherboard, and try not touching the motherboard with your finger.
    Put battery back in place before restarting computer.

    See also the following websites:



    Mar 04, 2009 | Dell OptiPlex GX520 PC Desktop

    1 Answer

    P4s533 mainboard

    Reset BIOS back to default
    1) remove M/board battery for 5 to 10 minutes
    while booting press the DEL or F2 or ctrl+esc
    or check lower part of screen during boot will tell you hoe to fet into BIOS
    Once BIOS reset to default boot computer if OK.
    you can change BIOS to suite CPU etc

    Oct 29, 2008 | ASUS P4S533-MX Motherboard

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