I mistakenly uninstalled multimedia audi controller in my PC. Now I have no sound , and only show found new device each time I switch the laptop on.

How do I reinstall multimedia audio controller on the internet free

You'll need to figure the make and model of your audio chipset first. You can try installing and running: Belarc Advisor - Free Personal PC Audit (http://www.belarc.com/free_download.html) to find that out.