I accidentally deleted my Realtek Sound Manager and the Audio Device with it. When I re-downloaded and re-installed the AC97 driver. My Device Manager says that it is installed properly, but no sound is coming. I also noticed in the Sounds and Contols in the Control panel that the only device stated to be installed is "Modem#0 Line Playback." I had XP Service Pack 2 and runs in Intel Pentium 4. Help could be appreciated.