Cmos battery is one important part of the computer. Often we forget the meaning of a Cmos battery even many of us do not know at all Cmos battery function. 'The lack of love for' us against the Cmos battery, often forget we are on some of the problems that occur due Cmos battery. And we're preoccupied with looking for another cause when the cause is 'trivial', ie Cmos batteries last!