How to Fix CMOS Checksum Error in Windows 10

How do I fix CMOS checksum errors on Windows 10?

1. Restart the computer.
2. Replace the battery.
3. Fix your CMOS battery's terminals.
4. Reset your BIOS.
5. Update the BIOS.
6. Replace the motherboard.

1. How do I fix CMOS checksum error?
2. What do you if your computer showing CMOS error?
3. What is the cause of getting CMOS checksum error during boot up?
4. What does CMOS checksum bad mean?
5. Will a dead CMOS battery prevent my computer from booting?
6. What causes a checksum error?
7. How do you fix CMOS battery failure?
8. How long does a CMOS battery last?
9. What is CMOS fail?
10. How do I clear my CMOS?
11. What is a bad checksum error?
12. What is main BIOS checksum error?

How do I fix CMOS checksum error?

BIOS version 6 or less

1. Turn off the computer and wait five seconds.
2. Turn on the computer.
3. When the first screen displays, do one of the following: ...
4. Press F5 to restore the BIOS defaults. ...
5. Press F10 to save the values and exit. ...
6. Restart the computer to see if the error continues. ...
7. Replace the battery on the motherboard.

What do you if your computer showing CMOS error?

Bad or old CMOS battery

Reboot the computer. If the error still occurs after rebooting the computer, enter CMOS setup and check all values. Also, verify the date and time are correct. Once everything is verified and changed, make sure you save settings and then exit the CMOS setup.

What is the cause of getting CMOS checksum error during boot up?

When a CMOS Checksum error occurs during system startup, it could mean that the system has been restored to default factory settings. The CMOS contains data related to BIOS and may have been reinitialized, causing this error. The problem could also occur due to the depletion of the CMOS battery.

What does CMOS checksum bad mean?

The CMOS Checksum Bad Error is an error that occurs when the CMOS values turn out to be incorrect. The CMOS memory stores a specific value normally to guard the BIOS software. Each time the computer is booted, this value, which is a number is checked against the stored value in the CMOS memory.

Will a dead CMOS battery prevent my computer from booting?

No. The work of CMOS battery is to keep date and time up to date. It won't prevent the computer from booting, you will loose date and time. Computer will boot as per it's default BIOS settings or you will have to manually choose the drive where the OS is installed.

What causes a checksum error?

The most common cause of a checksum error during the startup process is a faulty battery that is not providing sufficient power to the motherboard when the computer is off. However, motherboard malfunctions and viruses can also contribute to checksum errors.

How do you fix CMOS battery failure?

The computer will also display CMOS battery failure, CMOS read error, or CMOS checksum error, etc. If this happens, you need to switch on your computer and leave it on for a day. If the computer is not showing the errors after rebooting, the CMOS battery is charging. Otherwise, you need to replace the CMOS battery.

How long does a CMOS battery last?

The CMOS battery gets charged whenever your laptop is plugged in. It's only when your laptop is unplugged that the battery loses charge. Most batteries will last 2 to 10 years from the date they're manufactured. The more you leave your laptop plugged in, the longer your battery will last.

What is CMOS fail?

If see "CMOS fail" error message during boot up, this is not motherboard's physical problem. It can be resolve by load optmized default setting for the BIOS. You can press F3 key in BIOS by load the optmized default setting, then press F10 key to save and exit the BIOS.

How do I clear my CMOS?

Steps to clear CMOS using the battery method

1. Turn off all peripheral devices connected to the computer.
2. Disconnect the power cord from the AC power source.
3. Remove the computer cover.
4. Find the battery on the board. ...
5. Remove the battery: ...
6. Wait 1–5 minutes, then reconnect the battery.
7. Put the computer cover back on.

What is a bad checksum error?

A bad checksum error results when the file fails this check, meaning that some part of the data no longer corresponds to the original. If your data fails a checksum verification, it usually means that you need to replace it from a backup or otherwise reconstruct the affected file.

What is main BIOS checksum error?

Remove the power supply cable to the PC and remove the CMOS battery for at least one hour. If the problem persists then re-flash BIOS with F7 using the QFlash utility. Make sure that you disable the "Keep DMI Data" option on the QFlash homescreen before you actually run the update.