Drive Sweeper:
http://downloads.guru3d.com/Guru3D--...up)_d1655.html
Audio Driver:
http://www.realtek.com.tw/downloads/...&GetDown=false
1. go into add/remove in control panel and uninstall the audio driver
2. run drive sweeper and remove entries pertaining to audio or realtek
3. reboot pc
4. upon bootup if you get the new found hardware wizard box, cancel it out.
5. install the audio driver
6. reboot pc