Sound card installed but no sound?

Sound card installed, the speaker of the lower right corner signs are out, but still no voice, how going on?? Sound is good.

should not drive.If the Earth, then you add a sound card independent.mediaplay The question is can be used to play music? if we can play, then replace the headphone jack lines, it into another hole Give it a try.

Because of the sound card driver, the output sound hole may be changes in the original hole could be turned into a microphone headset hole.