I have seen something of this nature with our beta software, but not with our released drivers. Are you, or were you, using any beta version of NI software and/or drivers?
What version of the NI-DQ driver are you using? And the NI-IMAQ driver? And of MAX? You can determine all of these versions in the MAX utility by going to the "Software" folder.
If you cannot even enter MAX then I would definitely recommend uninstalling your NI-DAQ and NI-IMAQ drivers. Our latest versions are NI-DAQ 7.0 and NI-IMAQ 2.6. You can find both by going to http://www.ni.com and clicking on Download Software. These most recent versions should not exhibit the issue you are reporting.
Current Versions
http://digital.ni.com/softlib.nsf/webcategories/9AD71162B755F0E7862
56BBC005F001A?OpenDocument&node=132060_US
Regards,
Justin Britten
Applications Engineer
National Instruments