Windows 7; OEM system builder software packs are intended for PC and server manufacturers or assemblers ONLY. They are not intended for distribution to end users. There is a growing market for "do-it-yourself" home PC hobbyists who assemble PCs from components for their own use. Microsoft retail software licenses are the appropriate licenses for the do-it-yourself market. OEM System Builder software is not intended for this use, unless the PC that is assembled is being resold to another party. You will have to provide proof that you are a reseller before the order will be processed.

For more details see Link    General Liscensing

There are no returns on Software

Microsoft Windows 7 Professional 32-bit or 64bit (1-Pack), OEM


64bit version System Requirements: 1GHz 64-bit processor 2GB 64-bit memory Available 20GB 64-bit Hard disk Support for DirectX 9 graphics, WDDM 1.0 or higher.Click here for specs

Click here for 32bit vs 64bit info

Microsoft Windows 10 is here!

Click here for specs    

64bit Home $99, 64bit Pro $139