Note: Do this carefully, as you may also damage some other critical components of motherboard. Just carefully remove that battery, insert a new one and voila, its done. If you’ve ever opened your PC before then this may not be a hard task for you. It looks like a watch battery, and about the size of dime. This CMOS battery is a small battery mounted on the motherboard. This battery maybe in its last stages or may be dying. One possible solution to solve this issue is to replace the CMOS battery on the motherboard (mainboard). There can be different solutions when computer time and date keeps changing, but it depends upon the cause: If your Computer loses time and date, then this issue can be solved. You may be fed up changing the date and time again and again and this really seems to be a headache.
When you set the time and date properly in Computer, and when the Computer restarts, the time and date is again reset to a very old date, and time starts from 12:00.
Some people may face this strange problem.
