Broken sound in Windows 7

Ok so i have been having a problem with my audio jacks lately in my pc. None of them have been working so i have been using a usb mic/headset but now that has stopped working and when i don't have anything plugged in it just gives me this picture If anyone can help me please do.

If I have these kinds of issues I usually test with a common linux distro, like ubuntu. Those have the drivers built-in usually so you can test if it's a hardware or software failiure.