Hello and welcome. Why you want to download this pc video game prerequisite ? because you get black screen in new video games ? or maybe you get other errors when you try to start the game ? or maybe you have only sound and black screen for video games ? then you can download .net framework from here or from here for games.
Framework for new video games
1. Download the archive to a folder to your hard disk
2. Unpack the archive with this free archive manager
3. Install both files from downloaded archive.
4. You get a message that this version of gaming framework is already installed ?
Use Repair option.
Games for PC Windows
Windows 7 32 bits (x86) and Windows 7 64 bits (x64)
Windows 8 32 bits (x86) and Windows 8 64 bits (x64)
Windows 8.1 32 bits (x86) and Windows 8.1 64 bits (x64)
Download - Microsoft Framework for PC Video Games