CMOS: It is a readable and writable RAM chip on the computer motherboard. Because of the readable and writable characteristics, it is used to save the data after BIOS setting the computer hardware parameters on the computer motherboard. This chip is only used to store data.
BIOS: Actually, it is a set of programs that are solidified on a ROM chip on the motherboard of the computer. It stores the most important basic input and output programs of the computer, the self-check program after booting, and the system self-starting program. It can be downloaded from CMOS. Read and write specific information about system settings.
Changing the BIOS settings may cause no display on the screen. At this time, the BIOS battery must be discharged to clear the cache, and resetting the settings will fix the display problem.
Sometimes there is a problem with the computer's time zone, and the time always returns to a fixed time. At this time, the BIOS is out of power and a BIOS battery needs to be replaced.
The blue and red lights are flashing crosswise when the machine is turned on. It may be that the BIOS self-check has not been completed and cannot be reset and the machine needs to be discharged.
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