I have heard that if you leave the computer unplugged for long periods of time, the battery in the motherboard will run out and the operating system will be gone. But I looked it up, and I have read that the battery is their to keep the clock on and at the correct time and date.
I have an old computer that I hardly every use (or even plug in), but I still don't want it ruined. It uses Windows XP, BTW.
What is the battery for and will I lose Windows XP (or Windows 7 on any other computers) if the battery dies?