Here's How To Easily Fix BIOS Checksum Error

August 23, 2020 by Frank Maiden

 

Sometimes your computer may display a BIOS checksum error message. There can be many reasons for this error. A CMOS checksum error is a conflict between the optional metal oxide semiconductor (CMOS) and the basic input / output system (BIOS) when the computer starts up. This happens when the computer cannot read the startup information or the data does not match.

 

 

Fix CMOS Checksum Error On Windows 10, 8.1, 8, 7, Vista, XP

CMOS checksum error is an unusual computer error that occurs during system startup. A checksum error is often associated with the Basic Input / Output System (BIOS), the first program to run after the computer is turned on. BIOS initializes and checks hardware such as processor, memory, keyboard, mouse, etc.
what is checksum error in bios

If the CMOS battery is low or the BIOS values ​​are corrupted, preventing the CMOS from saving data, a checksum error will appear when Windows starts. In this case, you may see an error message on a black screen, as shown in the following image:



Now that we know the culprit that is causing the CMOS checksum error in Windows, it's time to find some solutions to fix the error.

Two Most Important Methods To Fix CMOS Checksum Error On Windows PC


What is a BIOS error?

If the system does not start, error messages may appear during startup. These messages can come from the system BIOS (ROM BIOS or UEFI firmware) or generated by Windows. Typical error messages displayed by BIOS: Invalid system hard drive. Failed to start.


This Windows guide will walk you through the two most important methods for fixing a checksum error, especially the "default settings for loaded checksum errorCMOS sums.

Method 1. Replace CMOS Battery To Correct Checksum Error

Most computers use a regular coin cell CR2032 3V. Such a battery is easy to buy at any supermarket. If you have been using your computer for more than 5 years, it is recommended that you replace the CMOS battery. Here's how to do it:

5. Insert the new battery into the battery compartment, making sure it is installed correctly, like the old one.

Method 2: Reset BIOS And Fix "CMOS Checksum Error - Default Settings Loaded"

2. When the message “Press F1 to continue, F2 to enter SETUP” appears, press F2 to enter BIOS. (You may need to press different keys depending on your BIOS, such as the Delete key)


What does checksum error mean?

Checksum is a redundancy check during the computer startup process to ensure that the data on the computer is intact and unimpeded. The data is scanned and verified for accuracy, either based on its relationship to data elsewhere, or based on previous data stored on the same computer.


3. Read the information on using the softkeys and select Load Defaults. (Or select the default BIOS option.)

9. Check SATA or disk. If your computer does not have a floppy drive, you can select Disable / No / Not Detected to stop scanning disksOh yeah.

Update Drivers To Avoid CMOS Checksum Error


How do I fix main BIOS checksum error?

First try clearing the CMOS settings memory. If you can start the installation after restarting, you are using the default CMOS settings. If that doesn't work, you can try flashing the BIOS memory using the motherboard manufacturer's tools that can be run without Windows.


To prevent the CMOS checksum error from accidentally bothering you, you also need to update your device drivers. Driver Talent is a useful driver update and download utility for Windows that keeps your drivers updated. It provides the latest official drivers and WHQL drivers, and helps you recover and start Windows more securely. You can click the button below to get driver updates directly.

1. Outdated Windows drivers can cause computer problems such as 100% disk usage, unrecognized network, mouse and keyboard not working, etc. Therefore, it is recommended that you use Driver Talent to update your drivers regularly.

2. Be sure to create a system restore point and make a backup of important drivers so that you can restore the system and drivers if your computer has other serious problems.

That's all. Hopefully after running these solutions the black splash screen will disappear and you will not receive the error message.And the CMOS checksum - the default settings are loaded. " If you are still unable to fix the checksum error on your Windows 10, 8.1, 8, 7, Vista or XP computer, write the line below or click on the left menu for help, or visit the official OSToto forum for more solutions.



 

 

 

 

 

 

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