This problem is a little more complicated, I guess you may be using one of those simplified small board, you can boot without inserting the card into the BIOS, turn off the on-board sound card, and then insert your sound card to try; Can not also change a card to try, if not, change 1 individual sound card to try, the above are not good, then in the case of not changing the motherboard to use external sound card, you can only use the USB port of the sound card