Windows 8 Enterprise X64 [FullVersion].rar

hi am princebill i have windows 8 enterprises i have downloaded .net framework 3.5 full installer 231mb but if try to run it the this box comes up saying windows need to install some feature if i click the button download and install it will start downloading but stops at midway point and says windows feature could not be installed and i hace lost the iso image

Windows 8 Enterprise x64 [FullVersion].rar