How to solve this i am facing no audio output device problem

SOURCE: sound device problem

The problem is the software driver that will make your sound device is not installed.install the device driver.this wiil cure the problem.

SOURCE: no audio output device installed

first i would see if all my audio drivers are up to date.

use this program:

http://www.drivermax.com/

thanks
CBZ

SOURCE: no audio output device is installed

Go into the device manager and uninstall the sound drivers, then reboot the machine. Upon start up it will find new hardware and reinstall the drivers. If this doesn't do it, then you may have blown the sound card or speakers.

SOURCE: i have no sound it says no audio output device

If you have restore turned on your system should have made a restore point before installing the update. Try and roll it back to before the install, Go to accessories, system tools, system restore. It should show the install of the update that created the problem, restore it to that point. check and see what the update was for and if you need it, if not block it from updating that one again on the update page.