Any Advice For Fixing A Computer Sound Card Problem?

About a month ago our desktop IBM computer had a really bad virus and in the process of getting rid of the virus (starting computer in safe mode) our sound was disabled completely - there is none at all. When we tried to reinstall hardware for the device Microsoft eventually asks us to find a smwdm.sys file that it can't find which we can't find either. I tried installing an entirely different sound card and got an error 10, which is something about a driver missing. Does anyone have any suggestions for this?Any Advice For Fixing A Computer Sound Card Problem?
read the link below for some info on your problem.

beauty