Low volume in Windows 7 as compared to xp?

I recently installed windows 7 in my d drive. I have two windows one in c drive & one in d (Multi bootable) .I found that windows 7 has marginally low volume as compared to xp.Is there any way to increase it by cross checking the same song in win xp..Do i need to update my sound drivers or its the inherent problem in windows 7.I found 1 way on internet.It was like right click speaker option & then click on playback devices etc. etc. etc. It didn't work with me.So don't give me this method as an answer :(