CMOS CHECKSUM ERROR - Solution

CMOS checksum error - Error encountered immediately after the boot sequence. This error also scares those who have some idea about CMOS, let alone an average user or… sub-environment. If this error were to occur to me, the first thing (the first prayer :)) that would come to my mind would be "Lord help not motherboard crashed". That would be the most painful solution a “CMOS checksum error”. A more relaxing solution is BIOS battery change. Price difference between the two situations is ~ £ 250 (if buy a card Basic bottom). Better. Let's see what's up with this CMOS.

What is CMOS? - Complementary metal – oxide – semiconductor. I clarified. By all accounts, CMOS deals with the micro-circuits on a system's motherboard. For detailed information about CMOS, see wikipedia. CMOS Battery

When the error “CMOS checksum error", Means that something no longer works ok on the motherboard. The error can be due to several reasons.

1. BIOS settings have been modified and the values ​​no longer correspond to the system. - Enter the BIOS and run “Load optimal settings","Load safe settings"Or"Load default settings”. It is one and the same option, but its name differs from one type of BIOS to another. At question ""Load Optimum Settings (Y / N) ”press [Y] to confirm the change made and exit the BIOS.

2. Frequent CPU is set to speeds higher than those indicated by the system configuration. - Try the same method as in point 1 or check if the BIOS settings match those in motherboard manual / computer.  

3. RAM incompatible and / or have changed a pleasant one RAM that is "hit". Scheme that had happened a few years ago when I bought a faulty memory full Computer Warehouse. I 256 of RAM and I wanted to put a plate 256 RAM. The result was a GIGABYTE motherboard changed. Of course, my money.

4. BIOS battery he died. - Usually this battery should last at least 5-6 years. After “optimal load settings"The BIOS, that would be the cheapest because of the error. Everything will return to normal after battery change.

These are the main causes of the “CMOS checksum error”. Do not rush to change the motherboard until you have checked the BIOS and battery settings. If you do not manage to change a BIOS battery or go into the BIOS, go to a specialist service. Don't forget to ask for the service guarantee. If the service person says that the motherboard needs to be replaced (they will surely find one in "stock"), make sure that your new motherboard did not end up in that service due to an error like this: ) There are known services that unknowingly make good money. Instead of changing a BIOS battery, change the entire motherboard. ;)

LE - “CMOS checksum error”Is an error independent of the operating system (OS Windows, Linux, etc.) of the computer.

Error messages CMOS block :

CMOS wrong
CMOS Memory Size WRONG
CMOS Checksum Bad
CMOS checksum error defaults loaded
Warning! CPU has been changed please re-enter cpu settings in the cmos setup and remember to save before quitting!

Passionate about technology, I enjoy writing on StealthSettings.com since 2006. I have a rich experience in operating systems: macOS, Windows, and Linux, as well as in programming languages and blogging platforms (WordPress) and for online stores (WooCommerce, Magento, PrestaShop).

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