Dazzle dvc 100 problem?

hi! I have a dazzle dvc 100 and am using pinnacle studio 12 to record. Everything was going fine until one day it just kept saying "capture error" I went on to the capture source and my dazzle dvc 100 was in the video section but wasn't in the audio section. I haven't got a clue as to why this is happening and any help would be much appreciated. thanks