My First Experience (2)

Oh yes I did it! I did reformat my computer but not that successful to boast. I lost the sound. Its not giving any sound at all, hu hu hu. Where have I gone wrong? The sound device's driver seems properly installed for it doesnt have a splat on it. I checked the other settings for the audio and if anything related to it is disabled or muted, but there's none. It makes me really sad. I ran the back up CD to hopefully fix the problem but it is not compatible with the operating system I installed. I put Windows Vista on it now and I like it so much. But sound is more important than the operating system so I guess I have to say goodbye to Vista and go back to XP. Poor me. Poor computer. I wish there's something else I could do than reinstalling XP back. Can somebody help me please..