Have you changed something in the configuration(OS, card, application) or did it occur without any intervention from your side?
was using the card on a laptop when the problem started. the system setup was reading a ratpuls by preassure bladder, via biomed..
it was working perfectly for 4 months then suddenly the card went bad all in and out channels were spiking and giving really odd data, tried to figure it out but to no avail. now I'm trying to see if i can get it working again but now im using it on a desktop same problem with the AI but now everything else seems ok.