.Net Framework problem. Can't update or install

Does it matter what I name it?
For example, c:\program data\microsoft\crypto\RSA\S-1-5-18A

Renaming the file made no difference.
Attaching new error log from 5 minutes ago

I went to put it back to the original and the download created a new file

Same fatal error message. What version of the framework do you currently have installed on the computer? Go to Programs and Features and see what version is installed. Try repairing the current .NET installation from Programs and Features.

I have none installed now.
I had 4.5.1 but deleted it based on a Microsoft answers suggestion before I came here
Windows 7 - Windows update error 80070643 - Microsoft Community

Before I deleted it, I had tried repairing it several times.
I looked in my Recycle Bin and that was cleaned out so I can't restore it

There should be at least v3.0 and v3.5 installed on the computer.

Open regedit, if you are feeling confident, and see what nodes/folders are listed under

Code:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

You can also run DSIM /Online /Cleanup-Image from an elevated command prompt. Check the output for any erros fixed or unfixed.

Here you go

Okay!!! So at the moment you cannot run any programs that use .NET later than v3.5.

Now try the DISM /Online /Cleanup_image from an elevated command prompt, as I suggested.

Thank you.
Where is the DISM/...?

How do I do that?