You may need to access the motherboard of your PC. You need to check if the negative and positive pins of the battery are correctly connected and there are no other loose connections. If the CMOS battery is loosely connected to the motherboard, you can experience a CMOS error. Now, try rebooting your PC normally and check if it boots without any error or not. This will reset the BIOS to correct BIOS settings. Step 4: Save changes and exit the BIOS screen. The confirmation message may differ from system to system. Step 3: If asked for confirmation, saying, ‘Load BIOS Defaults,’ click on Yes or OK to confirm. In most cases, you will find the Restore Settings button at the bottom of the screen. Step 2: You have to find the option to load default settings in the BIOS menu. You can refer to the manufacturer manual for instructions to enter BIOS as the way is different for each model and manufacturer. Step 1: Enter the BIOS setup on your computer. However, resetting the BIOS will not delete your files, folders, settings, and applications. This solution can be helpful if you have recently made any new changes to the BIOS and that didn’t go well. Many users resolved the CMOS Checksum invalid error by resetting the BIOS. You can check with the motherboard manufacturer if they can replace the damaged component. If there are any hardware defects, you may need to replace the component or get it repaired. Sometimes, dismantling the laptop or CPU incorrectly can land you in more trouble, so make sure you do it carefully and correctly. If you have not done it before, you can take the help of an expert in the field. You can dismantle your PC and check if all the circuits, motherboard, and other components are working as expected and there are no signs of physical damage. For example, if the computer’s motherboard is damaged, the CMOS battery won’t function properly, resulting in corrupt CMOS data. You can experience the CMOS Checksum error if there are hardware defects or damage to your computer. However, you can still try out other solutions and check if they work for you. You may need a little technical expertise to try out some of the solutions below, especially one with BIOS and hardware. 9 Solutions to Resolve CMOS Checksum Error However, the other reasons are resolvable with few changes to the computer. If the CMOS battery has any issues, you may also face incorrect time with Windows 10. If your motherboard or Complementary Metal Oxide Semiconductor battery is damaged, you need to replace it. A sudden power failure resulted in the PC turning off abruptly.Either the CMOS is corrupt, or the CMOS battery is not working. The main reason to experience the CMOS Checksum error message is the issue with CMOS. How do I fix CMOS battery failure? What Causes CMOS Checksum Error in Windows 10?.What causes CMOS Checksum error in Windows 10?.What does the CMOS Checksum error mean?.9 Solutions to Resolve CMOS Checksum Error.What Causes CMOS Checksum Error in Windows 10?.
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