How can I fix CMOS 502 error?

How can I fix CMOS 502 error?

CMOS Reset (502) The CMOS checksum is invalid You have the option of pressing enter to proceed without waiting 15 seconds. To resolve the CMOS Reset Error (502), restore the BIOS. Press enter to restart the PC. If the error displays after restarting, try to restore the BIOS using a USB drive.

What causes 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.

What is 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.

What is CMOS failure?

The most common symptom of CMOS battery failure is incorrect or slow system date and time in the BIOS, loss of BIOS settings when the computer is powered off, time-of-day clock stopped error message and so on. If the CMOS battery is out of charge, the BIOS settings will be lost when the computer is powered off.

How do I skip a checksum error?

Use inbuilt Repair Archive option Right-click on the RAR file showing WinRAR checksum error. Select Open with WinRAR option. Click on the Tools option and select Repair archive. Click on the Browse button to select the desired location of your choice to save the repaired RAR file and click OK.

What happen if BIOS corrupt?

The BIOS can be corrupted during normal operation, through environmental conditions (such as a power surge or outage), from a failed BIOS upgrade, or damage from a virus. If the BIOS is corrupted, the system automatically attempts to restore the BIOS from a hidden partition when the computer is restarted.

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 data checksum?

A checksum is a value that represents the number of bits in a transmission message and is used by IT professionals to detect high-level errors within data transmissions. Prior to transmission, every piece of data or file can be assigned a checksum value after running a cryptographic hash function.