Missing sound drivers after fresh installing Windows.

Hello,
i installed a new windows 7 home premium 32 bit but when i installed it there is no sound at all how can i get my sound back my processor intel pentium E5300 and from where can i get my drivers and sound pleeeeeaaaaaaaassssssssseeeeeeeeee help or if it is possible can you send me the drivers
chipset intel
p35/G33/G31 manufacturer ASRock model G31M-S
PLEASE HELP ME AS FAST AS U CAN