Click the Down Arrow key until you reach the Restore Defaults (or Load Setup Defaults) option and click the Enter If there is now such button, you may want to navigate to the Exit tab at the initial BIOS screen by clicking the Right Arrow on your keyboard until you reach it.Click Exit and your computer will restart. At the initial screen of BIOS settings, if you see a Restore Settings button at the bottom, next to the Exit button, click on it and make sure you choose BIOS defaults before clicking OK.The option to load default settings can be present under two different places in the BIOS screen depending on the version of the BIOS on your Dell computer.The usual BIOS keys are F1, F2, Del, etc. The BIOS key is typically displayed on the boot screen, saying “ Press _ to enter Setup.” or something similar.
SYSTEM CMOS CHECKSUM BAD PC
SYSTEM CMOS CHECKSUM BAD UPDATE
It may have been caused by an incorrect BIOS update or it can even be caused by a malicious program. BIOS settings don’t get corrupt too often and it’s always a problem when they do. Solution 2: Reset BIOS Settings to DefaultĪnother major cause of this problem is faulty BIOS settings. Check to see if the CMOS Checksum Error pops up! Let it stay removed for 10 minutes, take the other one, input it in a similar manner, and try to boot your computer.Some motherboards have a clip holding the battery down and you may need to lift it up to pull the battery out. Use your fingers to grab on the edge of the battery and pull it up and out of the socket holding it in place. If your computer is using a coin cell battery, removing the battery is relatively simple.Note: With some computers, you may need to disconnect cables, remove drives, or remove other parts of the computer to get physical access to the CMOS battery. You can also look it up on the Internet or contact your computer’s manufacturer for additional help. If you are unable to find your CMOS battery, refer to your motherboard or computer documentation. Open the computer case and find the CMOS battery attached to the computer’s motherboard.These batteries are not expensive and you can’t boot your computer without them so make sure you follow the instructions below! This is a clear sign that it’s time to replace the battery with a new one. If the battery is several years old, it won’t be able to provide enough voltage to CMOS and this problem is bound to appear.
One of the major causes of this problem is the CMOS battery.
Either way, loading BIOS defaults should be enough to resolve the problem. BIOS settings are corrupt – The problem can also be caused by wrong BIOS settings which may be related to new devices you might have added.Your CMOS battery needs to be replaced – CMOS battery won’t last a lifetime and after several years, they are unable to provide the sufficient voltage needed to start BIOS and this problem appears.