Greetings to all. Am 78 yrs old and stumbled onto this site looking for info on where to find the CMOS battery in my old Winbook Si2 laptop as the battery failed today and the computer can't find the operating system. This seems to be an amiable group with lots of activity. I have become familiar with some repairs for certain makes and models of laptops so may sometimes be of assistance in solving a problem. I am hoping there may be someone who can help in solving my immediate CMOS battery replacement problem.