Rather than "reinstall the software and drivers" (which will probably NOT solve your problem, but may create more trouble), a much better use of your time and efforts is to learn how to use DAQmx. Search the Web for "Learn 10 Functions in NI-DAQmx and handle 80 Percent of your Data Acquisition Applications" (if that's not the exact title, it's close enough that you should be able to find it). Ignore Point 1, which talks about the Dreaded DAQ Assistant, and also skip over the parts involving calling Windows functions. Most simple acquisition and signal-generating tasks can be coded with 4 or 5 basic DAQmx functions. If you need "more functionality", the Examples that ship with LabVIEW (Help, Find Examples, Hardware Input and Output, DAQmx) will overwhelm you with all the Bells and Whistles, but if you've read the "Learn 10 Functions" sections, you should be able to "chop out" the bits you don't need (for example, to programmatically set the scaling at Run Time) and reduce simple tasks to Configure, Start, Read (or Write), Stop, Clear. Note -- you might want to learn about State Machines (with states "Configure", "Start", etc.).
Bob Schor
