Sound Device Problem...please Help:(

[lalala]

Hi, im not very good with computerrs, but
i seem to have no sound coming from my speakers, my PC makes beeping sounds and thats about it. I havent had this problem until today when my sound ranomdly didnt work. When i chekc Multimedia audio controller it has a yellow question mark beside it. I dont have my computer instalation Cd and dont no how to fix it.

My comptuer is a Windows XP
emachines T6412

im not sure what else is needed, butt id really aprectaite it if you could help me in any way

Thanks alot.