edirol ua-25 help please
 

Can anyone offer advice/help with my soundcard - Edirol UA-25 ... two days
ago it was working fine, but suddenly it is incredibly noisy .. a sort of
constant 'white noise' which is making recording impossible ... I just cant
think of any reason why it has stopped working properly ..... any
suggestions of help gratefully accepted
many thanks
Val
(windows xp - Pentium 4 - running Sonar 5, Audacity + sound forge)