Windows 10 professional
Combining the strengths of Windows 7 and Windows 8, Windows 10 is last version of the most popular operating system in the world. Familiar and easy to use, with lots of similarities to Windows 7 including the Start menu. It starts up and resumes fast, has more built-in security to help keep you safe, and is designed to work with software and hardware you already have. At the same time, it includes a good number of impressive new features.