This is the original Microsoft Windows 7 Ultimate SP1 (64-bit) ISO from Microsoft. Including Microsoft updates until 12.9.2013 and Internet Explorer 10.

This release is the best you could find on the net, because Maherz made it just simple:
NO tweaks or add-ons.
NO additional programs and software added.
NO graphics, scripts and wallpapers added or changed.
It's the original image from Microsoft except added updates and IE10!

System requirements:
1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor.
2 gigabyte (GB) RAM.
20 GB available hard disk space.
DirectX 9 graphics device with WDDM 1.0 or higher driver.

Hashes of ISO files:
x64
CRC32: 0CD0DF77
MD5: 684F3F9759E4933A78F1E14104004288
SHA-1: 4B3DC5311A943A51A5C45201CAD4D0ED7C97C152

x86
CRC32: 8C9D4F8E
MD5: 165E4294A3A9E858288E1FB8359F0573
SHA-1: 969EB243F4DF0B89FA1225DF986EBFFE7BF3E428