Dead onboard sound?

Jan 23, 2019
19
0
10
So, I was installing my new GPU rx 470 and when I was ready I booted the computer and then I found I have got no sound at all I tried reinstalling my drivers a few times even reinstalled the Windows but nothing seems to work so my friends asked me if I turned off the psu to not produce power and if I grounded myself and I told them that I didnt do that because I didn't know I should and they told me I might fried the onboard sound card on my motherboard how can I check if this is true? My motherboard is Gigabyte B85-HD3-A
 
Jan 23, 2019
19
0
10

well i needed an upgrade so i sold it and bought this one so i dont think i can do this