An early version of the File Explorer ribbon (hidden by default). PDF Reader: A native, primitive "Modern" app for viewing PDF files. Modern Task Manager:

. Compiled on September 22, 2010, it was the first build to leak to the public in April 2011. While it heavily resembles Windows 7, it introduced the first "under-the-hood" changes and early UI experiments that would eventually become the core of Windows 8. Where to Find the ISO

By following these guidelines and being aware of the potential risks, you can safely download and explore Windows 8 Build 7850 ISO.

Always keep a snapshot of your fresh installation. Once you start exploring hidden features, crashes are inevitable. Happy exploring, and welcome to the Windows 8 beta club.

Once you have the genuine ISO, follow this guide for a safe installation.