The 10401 error is usually indicative of a problem with a DAQ card, not a MXI-3 card, but anything is possible. I will give you some general tips for troubleshooting the MXI-3 kit, but the DAQ card could ultimately be the problem.
First, do you have the MXI-3 Optimization Software installed? If so, does it run properly on boot up? This software should detect the presence of the MXI-3 link. If the optimization software is having problems running, I would recommend emptying your chassis of all cards but the MXI-3 and try booting up and running the software. If problems persist, you could try changing the PCI slot of your PCI-MXI-3 card, or, if you have other MXI-3 hardware available, you could switch pieces between the kits. You could even try the system with ano
ther PC.
If the MXI-3 kit is working properly, then the DAQ card or the chassis could be causing the problem. Have you tried any other cards behind the MXI-3 link? Have you tried the problematic card in multiple slots? Was the system ever working properly? If you feel the DAQ card is the problem, I would recommend creating a new support thread so that we can get our DAQ Applications Engineers to help you troubleshoot the issue.
Here is a link to more troubleshooting tips for MXI-3:
http://digital.ni.com/public.nsf/websearch/484f81e6570ad803862569ed007aaa41?OpenDocument
Ryan Tamblin
Applications Engineer
National Instruments