PLEASE FOR THE LOVE OF GOD ALMIGHTY HIMSELF tell me the model of your sound card!!
and i will get you a driver it appears your driver isnt installed . and follow this set instructions:
1. right click my computer
2.click manage
3.computer managment will come up
4.click device manger
5.A list of all your devices will appearr scroll down to sound video and game controllers
6,expand them via pressing the little plus sigh
7.look for your sound device
8.right click your sound device and click properties
9. under device status it will tell you if your speakers are working properly
10. next to the general tab you will notice another proprties tab click it
11. audio deivces , midi devices and instruments , and mixer devices are there . expand them all via pressing the little plus again , your audio devive should be under all of them. highlight the 1st one example ( FOR ME IT WOULD BE ( RELTEK AC97) then below all that hit properties make sure the (USE AUDIO FEATURES ON THIS DEVICE box is checked , do the same all all of the options in properties.
12. It may ask you to restart , do so if asked.
Plan 2 : If all else fails
Rolling back your driver , now when you roll back your driver it will go back to a preious drover that worked fine , so roll back your driver after you have done all this , im gunna need to know the soundcard you have and your speaker model and make so i can get you the correct drivers.
I will countine after you have done all of what ive asked