CMOS checksum error

Bad or possibly old CMOS Cave battery
Restart the program. If the error persists after restarting the computer, go to the CMOS version and check all values. Also parse the date and time correctly. After everything has been checked and replaced, be sure to save the settings and then exit the CMOS setup.

Almost all common symptoms of a CMOS battery failure are incorrect or slow BIOS access and system time, difficulty with BIOS settings when shutting down the laptop, error messages with the clock stopped, etc. If the CMOS battery is low, the BIOS settings will be lost when you try to shut down the computer .

Bad or old CMOS battery
Restart your computer. If the error persists after restarting the computer, take a look at the CMOS configuration and check for great deals. Also check that the date and day are correct. Once everything has been checked and changed, be sure to lower the settings and then complete the CMOS setup.


If the problem persists after unplugging the computer, the CMOS battery may be bad or already damaged. Before turning on an abandoned computer for a few days instead of the CMOS battery, you can charge the battery by leaving the computer on.

If you knew about the BIOS package up to this point, it would be of great help. Are you sure you have cleared the CMOS, home should help. You can try Load Default, optimally on Asus, it should be on the last tab regarding UEFI.

The CMOS checksum is usually incorrect, perhaps because the system was reset during BIOS boot or simply because the RTC battery ran out. corrective action. Restart the system. If the problem persists, replace the real time clock battery.

Just count the number of screams on the fan connector

4-pin connector
3-pin connector

You should also look at Qfan, some sort of control in your bios (PWM means you have a 4-pin fan, 3-pin DC by default). It’s best to always see the fan header for your company as some motherboards may have 3-pin fans in PWM mode…

Paperdoc explained it very simply… You can read this article



Restart your computer. A normal machine usually generates a new checksum to fix the error.
Download the BIOS update and use your thumb. Download the message from the motherboard manufacturer’s website.
Reset your current BIOS.
Replace CMOS battery.
Contact a technician or computer to take action to resolve the expert’s error.

I would really like to know what myBIOS version before I can downgrade it, but since I was never structured for updates, I never thought to check.


I didn’t want to find the jumper on the mobo so today I removed the CMOS battery and came back about 15 minutes later and was prompted to reset the bios, enter the default optimized settings… still no luck. I also tried unplugging the fan (which was actually a 3-pin fan, the big fan connector is a 4-pin, thanks for the usually helpful link!) and plugging it back in, just as successful as making sure the group settings in the BIOS are for the fan now that I have an idea of ​​what the type is.

It will continue to stubbornly help stop the rotation, even if the operating system is loading.

I have ASUS Armory Crate and Aura Sync, since they are all pre-installed, could one of them be the culprit? I usually rarely use either, but since the Armory Crate has fan monitoring capability, did it also have the ability to control fans?

If you actIf you knew the version of your personal biography before this happened, it would help you a lot. If you’re sure your entire family has cleared the CMOS, this should help. You can try Load by default, optimal if Asus should be on our last tab in UEFI.

4-pin connector

3-pin connector

You can also check the Qfan control in your bios (PWM really means you have your own 4-pin fan, 3-pin DC by default). It’s best to always find your own fan header, as some motherboards can handle 3-pin fans in PWM mode…

Paperdoc explained it very well… You can check his own post


As the name suggests, I had to reset my CMOS in order to get paid for a hardware replacement and I couldn’t post my MB. And first the spec info:

CMOS corruption is a fairly common occurrence. Unfortunately, in most cases, this indicates a malfunction of the motherboard, but, unfortunately, this is not the rule. The problem may be in the BIOS / UEFI or it is out of batteryCMOS battery.

So it was a significant result of something from your own side. I got my hands on the wonderful i7 2600K, and since I could definitely use up toAdditional threads for a small number of workloads, etc. plus an unlocked multiplier, this idea would serve me well.

If I first changed the processor, then there was no video signal, but it started up normally twice. All devices were activated initially, I heard the OS custom player doing its job, I can be sure that the machine is working fine, so everything worked fine. In fact, not being able to support a video signal, I just pressed the power button and it turned off normally.

So since I couldn’t get video, I warned that I just removed the suggested CMOS battery and did a reset. This has happened to me before with major computer upgrades, no big deal. However, this time I couldn’t get MB to publish or upload anything. In fact, after the CPU fan started spinning earlier, it stopped and made a little jitter every few seconds because it couldn’t start. I then removed all hardware components except for the CPU and RAM. Reset CMOS yet just in case, not joy. I turned on the computer for 1 minute to see what would happen, no joy. I used a flash drive, nothing. Then I switched back to the i5 3570 so you and my regret of the same behavior can’t make it live now. Checked all cables, everything is fine.

I’m a little confused right now. suggestions? Is the CMOS battery dead? Did something accidentally die? Thanks for the advance.

(If this is too long, the 3rd might jump to the linked post, so I’m guessing anyone has PXE errors, maybe it’s not even relevant right now??)

I invested in this about 6 months ago, along with all the changes I detail below, 6 months ago.

It froze my family and I used the hard reset button (this is usually the first time I use it because it’s tiny for the size of my head and I definitely didn’t notice it before).

Before freezing, I would probably hold down the power button for 7 seconds.

I don’t know if using the reset button is related to my problem.

Then one of those error comments (it’s mutable) contains-

None of this does anything other than throw me into another screen with a blinking cursor (underline) to the left, which then ignores me.

Restart the specific computer. A normal reboot usually triggers a new checksum and fixes the specific error.
Download and flash the BIOS update. Download the update from the respective motherboard manufacturer’s website.Reset BIOS.
Replace CMOS battery.
Contact a technician or computer repair technician.

I tried to boot from the recovery CD, but the CD doesn’t work.

Googling, I came across a guy who fixed the problem by removing (and replacing after 10 minutes) a specific CMOS battery.

Please re-enter CPU control in the CMOS settings and don’t forget to save the output!

1 Turn on your computer and wait a few minutes for the update to complete. The computer may either shut down. 2 Close your computer case and restart your precious computer to see if a CMOS checksum error occurs on the computer! Next

Just before that, I tried every XP CD in case there was a problem with the other CD, but it is always ignored.

I just got a new error when trying to swap CDs. I press F1 to go to a certain blank screen to start the system. Instead I got a blank computer with a new error message –

The next time I look, I still get CMOS checksum messages, then F1 (or Del) just goes to a blank screen with a blinking cursor (underscore) in the top left corner. More posts.

PS Everything is moand attempts with XP cd are constantly ignored (cd ignored)

I just did a fresh reboot and held down the delete key very early and released it as soon as the message about preparing to install appeared. Very soon it was time for a blank screen, but by that time there were already 4 lines of chatter, and the cursor often blinked at the end of the characters on the 4th line.

One of my problems with Google was solved when the guy found out he was looking for your card reader. He inserted an empty card into the slot, which made him very happy.

My computer was used second, and had a lot of crap connected to it, which I removed.

When I took it off (a few months ago) I noticed that this particular front panel has a special plate with two USB connectors. The motherboard manual talks about this and gives advice on how to connect (almost all of this was done a few months ago and has not changed since).

CMOS data corruption is a fairly common occurrence. Unfortunately, most of the time this indicates a faulty motherboard, but it’s definitely a rule of thumb. The problem may be in the BIOS/UEFI or a specific CMOS battery may be defective.

Invalid CMOS checksum, likely due to the system resetting the BIOS during boot or the RTC battery being depleted. medical technology. Restart the system. If the problem persists, replace the real time clock battery.