This Desktop comes fully loaded with Microsoft Windows 10 Home 64 Bit! This package will arrive recently restored with Windows 10 Home 64 Bit so you will be the first to use it. The restore partition will allow you to restore your computer back to the original state of purchase at any time and prevent expensive trips to the computer repair shop. Condition: Refurbished, Previously Used Minor scuffs Through our refurbishment process, we test the entire computer for functionality including memory, hard drive, and keyboard tests. Computer may show very minor signs of wear and the overall condition is considered good with minor scrapes. Everything is guaranteed to be fully functional. Microsoft Authorized Refurbisher: As a Microsoft Authorized Refurbisher, we must follow strict requirements established for the MAR program by Microsoft. These requirements are designed to ensure that you receive a high quality and professionally refurbished computer. Being part of the MAR program, also guarantees that you will receive a legal Certificate of Authenticity (C.O.A.) attached to the computer, and a valid version of Microsoft Windows 10 operating system installed on every computer that is purchased through us.