I don't have an answer to the question yet. I just wanted to say the IT IS NOT THE BATTERY. Every time I read a response to this question, the first thing people jump to is it has to be the battery. I've replaced my battery twice and it hasn't helped. The Lithium-Ion batteries on the motherboards last for around 10 years. The chances that I got 3 bad batteries in a row are astronomical. It has to be a problem with windows 8. I can reinstall Windows 7 and the problem goes away. I reset the bios on the motherboard to the default setting, still no help. I ran the computer overclocked and normally, and still the problem is there. I'm just wondering why, if so many people are having this problem, why isn't Microsoft doing something about it? And, if they are working on it, a little acknowledgement would be nice. It's not a major problem, just a heck of an annoyance.
By the way, what motherboards are people running? I have a Fatal1ty Z68 Professional Gen3.