I have a Sony vaio model pcg-7n2l that a friend gave me I upgraded it fro XP to windows 7 but the time continues to reset every time I turn the laptop off. I have set parental controls so my kids can not access it after a certain time of day but because the time resets they are unable to use the laptop. I have looked on the net and most recommendations were that the CMOS battery needed to be replaced. thought it would be easy because all my other Laptops are HP and the CMOS battery is easy to access but on this Sony vaio model pcg-7n2l I can not find the CMOS battery I have taken the bottom off and I have even removed the Keyboard looking for this elusive battery. Any Help would be greatly appreciated