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.
While the term NGO has various interpretations, it is generally accepted to include private organizations that operate without government control and that are non-profit and non-criminal. Other definitions further clarify NGOs as associations that are non-religious and non-military.