Hi there Danny wrote:
No jumpers on the motherboard ... :( ...
Sometimes it's the way the connector is plugged into the motherboard or the front panel.
Sometimes it's a BIOS setting. Look for AC 97. See; https://en.wikipedia.org/wiki/Intel_High_Definition_Audio If all of this fails you need to hack the hardware a bit. See; Regards, Rob -- ISDS is evil. Abolish ISDS.