USB Audio and onboard audio chipset

[George27]

I have a Gigabyte GA-F2A75M-D3H board, a year and a half into the 3 year warranty. I started up yesterday and got not sound. Mic input didn't work, speakers produced static, Updated the drivers and  the panel showed that there was no recognized intially but 8 hours later there was a popup stated that speakers were just pluged in. Abviously there is something wrong with the onboard audio. My question is do those plug in usb audio cards however small they are, work without the onboard audio chipset?  

[Ponch]

Yes.