How do I clear the CMOS checksum error?

How to Fix CMOS Checksum Errors

  1. Restart the computer. A normal restart usually creates a new checksum and eliminates the error.
  2. Download and flash a BIOS update. Download the update from the motherboard manufacturer’s website.
  3. Reset the BIOS.
  4. Replace the CMOS battery.
  5. Consult a technician or computer repair expert.

How do I fix ROM BIOS checksum failure?

How to Fix a BIOS ROM Checksum Error

  1. Go to ‘Start’ >’Turn off your Computer’ >’Restart. ‘ Press Enter.
  2. Take off the outer casing of your CPU by removing the screws and sliding off the outer case to one side.
  3. Put the new CMOS cell in old one’s place.
  4. Enter BIOS once again just as you did earlier.
  5. Press ESC and then ‘Y’.

What is the cause for the error CMOS checksum error?

The CMOS checksum error appears when the information on the CMOS is corrupt. Common causes of the checksum error are when the CMOS battery is dead. Without this battery, the CMOS can’t store information. Another reason for the checksum error is that a power surge has caused a loss of power.

How do you reset the BIOS?

Reset the BIOS to Default Settings (BIOS)

  1. Access the BIOS Setup utility. See Accessing BIOS.
  2. Press the F9 key to automatically load the factory default settings.
  3. Confirm the changes by highlighting OK, then press Enter.
  4. To save the changes and exit the BIOS Setup utility, press the F10 key.

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.

Does CMOS battery stop PC booting?

A dead or weak CMOS battery will not prevent the computer from booting.

What is a corrupt BIOS?

A corrupt BIOS is one of the possible causes of a computer unable to complete POST or boot into the operating system. If the Dell computer or tablet supports BIOS recovery 2 or 3, you can recover the corrupt BIOS by using the recovery method that is detailed below for your Dell computer or tablet.

What is a BIOS checksum error?

A BIOS checksum error is one of the most common errors you can encounter when you build your own computer, perform a hardware upgrade or attempt to bring back to life a computer that hasn’t been used for a long time.

What is a CMOS checksum error?

The Ultimate Laptop Buying Guide. A CMOS Checksum error is a conflict between the CMOS (Complementary Metal Oxide Semiconductor) and BIOS (Basic Input Output System) that happens when you boot up a computer. It occurs when the computer isn’t able to read startup information or the data does not match up.

What causes a checksum error on a smartwatch?

One of the more common causes of a checksum error is also the simplest to solve. The battery that powers the CMOS is a watch battery, and it can run out of power. When the battery is dead, the CMOS can’t store information anymore. Power surges and sudden losses of power are other causes.

How do I fix a checksum error in WinRAR?

How do I fix a checksum error in a WinRAR file? Try using WinZip to repair the file. To do this, right-click on the file and select Extract file. Next, go to Miscellaneous and place a checkmark next to Keep Broken Files then choose an extraction location and select OK.