A CMOS battery--short for complementary metal oxide semiconductor--is necessary to retain your computer's hardware settings. Symptoms of a dying CMOS battery include system warnings, lost time settings, and sometimes even unexpected shutdowns. Once you've recognized the symptoms, you can check the battery itself.
A non-governmental organization (NGO) is a citizen-based association that operates independently of government, usually to deliver resources or serve some social or political purpose.
An organization is a group of people who work together to achieve a common goal. People belong to organizations for a variety of different reasons. Some people belong to organizations to learn new things. Members of other types of organizations get together for sport and recreation.