I have a Dell computer that runs pretty good but decided to uninstall some junk today to clean it out. On item I uninstalled was a sound device (by mistake) now whenever I try to get sound from any program the warning box says "Windows Media Player cannot play the file because there is a problem with your sound device." When I go on to "sound devices" on the control panel it says "no audio device" could someone please tell me how to re install it ? Thanks so much