What should you do if you get the POST error CMOS checksum bad?

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.

1. Is CMOS checksum error bad?
2. What does it mean system CMOS checksum bad?
3. How can checksum detect errors?
4. How do I fix my CMOS settings?
5. How long does a CMOS battery last?
6. What is CMOS checksum error defaults loaded?
7. How do I fix HP checksum error?
8. What causes POST failure?
9. What is a BIOS POST error?

Is CMOS checksum error bad?

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 it mean system CMOS checksum bad?

CMOS checksum is bad, possibly because the system was reset during BIOS boot or because of a dead RTC battery. ... Corrective action. Reboot the system. If the problem persists, replace the RTC battery.

How can checksum detect errors?

For error detection by checksums, data is divided into fixed sized frames or segments. Sender's End − The sender adds the segments using 1's complement arithmetic to get the sum. It then complements the sum to get the checksum and sends it along with the data frames.

How do I fix my CMOS settings?

Here's what you do to change those settings. To enter the CMOS Setup, you must press a certain key or combination of keys during the initial startup sequence. Most systems use "Esc," "Del," "F1," "F2," "Ctrl-Esc" or "Ctrl-Alt-Esc" to enter setup.

How long does a CMOS battery last?

It provides power even when the computer is off and allows the CMOS to save all the settings [source: Indiana University]. You can expect the CMOS battery to last for up to five years. The more your computer is used, the longer the battery will last.

What is CMOS checksum error defaults loaded?

CMOS checksum error - Defaults loaded

Checksum of CMOS is incorrect, so the system loads the default equipment configuration. A checksum error may indicate that CMOS has become corrupt. This error may have been caused by a weak battery. Check the battery and replace if necessary.

How do I fix HP checksum error?

Replace the battery on the motherboard. After replacing the battery, restart the computer to see if the error continues. If the error no longer appears, wait until Windows opens and set the date and time to current settings. If the error still appears, the default BIOS information has become corrupted.

What causes POST failure?

A POST failure can be triggered by some reasons, for example, new hardware conflicting with old hardware, failing or bad hardware device, electrical shorts or incompatibilities. If you are encountering this issue, what should you do to get rid of PC not posting?

What is a BIOS POST error?

A POST error message is an error message displayed on the monitor during the power-on self test if the BIOS encounters some kind of problem while starting the PC. ... If the POST detects an error before this point, a beep code or POST code will be generated instead.