No Audio Output Device is Installed problem solved.
Follow the easy steps and your sound will be back.
Thank you for watching!
If you don’t have the “sound, video, and game controllers” option you might have to download the correct sound driver from the internet (google) or from your computer manufacturer’s website.
Here are some of the driver(s) that may work (google them):
“Vista_Win7_R241_x86” File From RealTek
According to a friendly viewer (bluveeta):
“If it still doesn’t work for you after step 3, after you have downgraded to your old sound driver, reinstall the newest version again. Sometimes when a problem with a driver occurs you can fix it by reinstalling it (to do this downgrade then upgrade back to your newest/original driver ) *this is what worked for me w/ a toshiba satellite. It should work on other pc’s if all else fails.”
****UPDATE**** (May 15, 2011)
Check this link in case you have problems with Device Manager.
I am still looking for an answer as to why…