The interface of this version is more attractive that catch the attention in first sight. The installation process is also easy. After launching wind 7 MS introduced windows 8 and windows 10 which are currently used and sale in the market.
The MD5 HASH keys are available on the web. I suggest you check the MD5 hash of the ISO you download with a tool like. If the key matches then your ISO is a non-tampered original. Win 7 SP1 x64 English Media Editions are 3,243,070KB X17-58997.iso Home Premium MD5 hash: da3829c436306bebea7f0f X17-59186.iso Professional MD5 hash: ed15956fe33c13642a6d2cb2c7aa9749 X17-59465.iso Ultimate MD5 hash: c9f7ecb768acb82daacf5030e14b271e It is never a good idea to just buy a key unless it is directly from Microsoft.