Hi I've just got a new 9400f on an MSI A-pro with 16gb of corsair RAM. I did the mistake of plugging in my old keyboard(one of those pesky round,non-usb slots while the OS was open). I've been told that it can burn the keyboard wire slot thingy. Even though my keyboard works fine I can't get my earphones to work in the standard slots(they work with an external usb card), could I have burned the on board audio card?I'll get it looked into tomorrow but I'm sitting on pins right now.Thanks in advance.