I was a PC gamer about 10 yrs ago, and once had the same problem.
Fellow gamers instructed me to websearch for and download the missing dll file
Download your missing dll-files - DLL-files.com
I can't remember what else they instructed - it was too long ago
Try reading this
http://asknerd.net/index.php?option=...FRgulAodMW9qoA