What happens if you lose the CMOS information on a PC system?

If you lose the CMOS information on a PC system, the BiOS settings will revert to their default values, which can lead to issues such as incorrect system time and date, improper boot sequence, and failure to recognize hardware components. You may also encounter problems with overclocking settings or specific configurations for drives and peripherals. To restore functionality, you typically need to reconfigure the BiOS settings manually or replace the CMOS battery if it's depleted.