DFI CS65-SC User Manual page 89

Appendix B - System Error Message
B.1 POST Beep
B.2 Error Messages
CMOS BATTERY HAS FAILED
Caution:
Danger of explosion if battery incorrectly replaced. Replace only
with the same or equivalent type recommended by the
manufacturer. Dispose of used batteries according to the
battery manufacturer’s instructions.
CMOS CHECKSUM ERROR
DISPLAY SWITCH IS SET INCORRECTLY
System Error Message
B