Hey PAYTHETROLL. it would help to know what brand and model of computer you are using. The most obvious answer is that your audio driver is either missing or corrupted. Did you possibly let your computer do "automatic updates" from Microsoft? The rule of thumb is to NEVER let Microsoft update a driver. Did it work before updates were installed? If so, then you can "roll back" the driver update through Control Panel/System/Hardware/Device Manager/Sound, Video Game controllers/ ? whatever audio card is available. Another option would be to download and install/run a utility called Driver Max. It is freeware and does a pretty fair job of updating your system drivers.
You could try telling us what computer you have for starters. Secondly, what windows version are you using?
We can only work with the information you give us, we are not mind readers!!