If I were you, I would start from square one, beginning with a full manual
uninstall:
1.Download the latest Realtek HD Audio drivers (ver. 1.75), and save to a folder
on your Desktop, from here:
http://www.realtek.com.tw/downloads...=3&GetDown=false#High Definition Audio Codecs
2. In Control Panel > Device Manager > Sound, video and game controllers,
right click on the Realtek HD Audio Device and select UNINSTALL ****be SURE to
check the box to delete the driver files in the uninstall confirmation box****.
3. In Control Panel > Programs and Features, right click on the Realtek HD
Audio Drivers and select UNINSTALL (Windows will install generic HD audio
drivers -- Go back to Device Manager and UNINSTALL the generic HD audio device.)
4. REBOOT (Windows will reinstall the generic HD audio drivers again -- IGNORE.)
5. Right click the downloaded new Realtek driver file and press the "Unblock"
button and the "Apply" and "OK buttons. Double click and install the new Realtek
drivers.
6. REBOOT
7. Go back to Control Panel > Sound, and configure your Recording and Playback
devices using the Properties and Configure buttons. Be sure to right click in an
empty area of both windows, and check both "Show Disconnected Devices" and "Show
Disabled Devices".
I Bleed Blue and Gold
GO BEARS!