Windows 7 Ultimate SP1

Windows 7 Ultimate is the most versatile and powerful edition of Windows 7. It combines remarkable ease-of-use with the entertainment features of Home Premium and the business capabilities of Professional, including the ability to run many Windows XP productivity programs in Windows XP Mode.For added security, you can encrypt your data with BitLocker and BitLocker To Go. And for extra flexibility, you can work in any of 35 languages. Get it all with Windows 7 Ultimate.

Features
-64-bit versions Combines remarkable ease-of-use with the entertainment features of Home Premium and the business capabilities of Professional–get it all with with Windows 7 Ultimate
-Make the things you do every day easier with improved desktop navigation; start programs faster and more easily, and quickly find the documents you use most often
-Run many Windows XP productivity programs in Windows XP Mode; watch, pause, rewind, and record TV on your PC
-Easily create a home network and connect your PCs to a printer with HomeGroup; connect to company networks easily and more securely with Domain Join
-Recover your data easily with automatic backup to your home and business network; help protect data on your PC and portable storage devices against loss or theft with BitLocker.

Net 3.5 Enabled

System Requirements
Processor: 1 gigahertz (GHz) or faster.
RAM: 1 gigabyte (GB).
Free space on hard disk: 16 gigabytes (GB).
Graphics card: DirectX 9 graphics device or a newer version.
Additional requirements to use certain features.
To use touch you need a tablet or monitor that supports multitouch.
To access the Windows store to download and run apps, you need an active Internet connection and a screen resolution of at least 1024 x 768 pixels