Sound card problem
When I was using Windows XP , my pc was running well that is, i had no problem. I have just installed Windows 7. Though all things are running nicely but i have noticed a problem with my sound card. Whenever i try to play any ''MP3'' song, a message is shown like as given below image.

It is need to say that, original sound card which generally attached with mother board became damage so i was using another sound card for 2 years.
i have lost my sound card CD !!!
NOW what i should do to solve this problem? Plz help me. I am waiting for your help
[email protected]