Sound card problem ?

[Scarlcfvet]

So last night after I cleaned my pc with an air canister I turned on my computer and noticed that my headset was making a weird buzzing noise. After logging into the computer I switched headsets and the sound was still there but only went away when I went to the sound in my control panel and muted it. When the sound is muted the cracking sound goes away completely but after I turn it back on the crackling static noise is there. Does anyone know any fixes or why this is happening ?
P.S. Audio is not working except for the static sound. No music, video, or games audio are working.

 

[George Lazu]

If it isn't a software problem [not likely], you must've damaged the sound card. A PCI soundcard isn't that expensive, you could buy one, or lend one from a friend just to test it.