You'll loose your BIOS settings and the computer won't be able to recognize some of the settings. If the battery goes dead, replace the battery, enter the BIOS settings and load the default, then do whatever is necessary under YOUR BIOS to recognize your hardware, then save the settings.
Chances are that the CMOS Battery on the motherboard is dead and needs to be replaced. Without this battery, the computer can not remember the CMOS settings when the power is turned off.
Dead CMOS battery, a virus or a motherboard going bad.
I would have to say that there is something bad in the circuitry of your motherboard. I would contact the manufacturer to see if you can get your mobo replaced because a CMOS battery should not do this.
A slot on the motherboard intended to hold the CMOS battery.
There are none. One is a battery which is used to provide passive power to the CMOS chipset to keep it from clearing itself.
CMOS battery
You will have to run to the store, CVS, Walgreens, Walmart etc. and pick it up. It is a CR-2032 button battery.
how can i break bios password without remove cmos battery
You would dispose of such as you do any other battery.
small battery located on the motherboard or computer case.
The CMOS is run off of a battery on the motherboard.
a System Clock.