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How to Fix CMOS Checksum Error On Dell XPS Laptop?

CMOS Checksum Error occurs generally when you DELL Laptop/Desktop startup, which means the DELL system, has been restored to default factory settings. A checksum is computed as an error detecting code to guard the BIOS settings stored in the CMOS memory. Means that the CMOS contains data related to BIOS and may have been reinitialized. The problem could also occur due to the depletion of the CMOS battery or even when the CMOS Battery may not be functioning properly or the battery life may have expired, a virus may have updated the BIOS, and when the computer may not have been shut down properly, CMOS memory size wrong, and CMOS Checksum error defaults loaded and many others. The CMOS Checksum Bad Error can be fixed easily, after changing the CMOS battery, by following the listed solutions carefully. Well, here the blog will guide to Fix CMOS Checksum Error On Dell XPS Studio 8100 Desktop/ Dell Inspiron 570, with ease in a short time. So just follow the below steps to quickly fix the issue.

Fix CMOS Checksum Error On Dell

Steps to Fix CMOS Checksum Error On Dell XPS Studio 8100 Desktop/ Dell Inspiron 570:-

Solution 1:-Reinitializing the BIOS

You should try to reinitialize the BIOS, before making any costly maintenance. Possibly it helps to fix the problem.

Solution 2:- Change BIOS Battery

If the problem continues this may be due to the fact that the battery powering the CMOS (when the computer is shut down it allows the CMOS to store information), is depleted. You should need to change BIOS Battery.

The CMOS battery is a small pin found on the motherboard; you can refer to the manual provided with your motherboard to change it or connect to the DELL customer support technicians to change it for you at your place if you don’t want to risk any damage.

Solution 3:- Boot Mouse, Monitor and Keyboard

You might have a motherboard failure, then don’t worry. You should try the following steps to do to perform the troubleshooting steps.

  • First of all, power off and unplug.
  • Then press/hold “Power” button for least 15 sec.
  • Disconnect all peripherals.
  • Then remove motherboard battery.
  • Press/hold “power” button for 30 sec.
  • Leave it unplugged, without battery for several hours or overnight.
  • Then reinstall the battery (right-side-up).
  • See if it boots now with the only mouse, monitor and keyboard connected.

Solution 4:- The Computer Shut Down Properly

The Computer may not have been shut down properly: Often when running MS Windows, if your computer is shut down without first properly shutting down the operating system, the CMOS settings will get corrupted, which causes the CMOS Checksum Bad Error. Then easily avoid this error by just making sure that the computer is shut down properly before turning off the main power.

Related Post:- How To Fix Dell Optiplex Error Code 4?

I hope your problem is resolved.

In case, you are facing the same problem, so then you should connect with our proficient DELL technical support team.

Dell Customer Support Number


Contact at DELL Customer Support Service For Instant Help:-

You can feel free to call at DELL XPS Support Number 1800-582-2431 to Fix CMOS Checksum Error On Dell XPS Laptop. A team of DELL customer support professionals will help you in resolving this error by giving you the comprehensive guide. Also, you can get the qualitative and finest solutions to troubleshooting other kinds of fix DELL technical errors or issues. Hence, connect with experts now and take instant online customer help for further DELL queries.


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