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.
A nonprofit organization (NPO, also known as a non-business entity) is an organization that uses its surplus revenues to further achieve its purpose or mission, rather than distributing its surplus income to the organization's shareholders (or equivalents) as profit or dividends.