Problem with my sound after..

[sh0rty888]

Here's the problem
I finally installed the motherboard, athlon 64 3000+, and the antec smartchoice 400w (sp?) psu

Then when i got in window (without reformating) it seems that the drivers from my onboard sound card (in the motherboard) is already there, not needing an update even tho i installed a new motherboard
i do not hear any sound from winamp or any window sound.

any problem solver here ?

 

[sh0rty888]

I just installed the drivers for my onboard sound card
and it's like if it was working but no sound is coming out of the speakers.
weird