When attempting to run Download Surgeon 3 if you see an error message like this:

MSVCR120.dll was not found     --  or similar type file name in the error message

This is caused by a missing Microsoft Library file.  To fix this issue go here:  C:\Program Files\Download Surgeon 3

In this folder find this two files.  Double click them and run them one at a time.  If you see a message about  Uninstall or Repair, select REPAIR.

If those files are not in the above folder then download them from here:

https://www.dropbox.com/s/psn3w12pukvispn/vcredist_13.exe?dl=0

https://www.dropbox.com/s/3z76mju8v6egstw/vcredist_17.exe?dl=0

After download them run them and instructed above.  After you have ran these file try opening Download Surgeon again.