i did the same as i am very impatient and could not be bothered to check things before i deleted them ,i phoned up the shop that i bought my pc from and they told me to simply to run the disc that i got when i purchased the pc and click on installt the sound device , i did this and it reinstalled itself, it is better now than it was before i deleted it so i suggest you give it a try. you should have the disc in a folder/envelope for backup purposes with all the other bumpf you got when you bought your pc. hope this helps.