Thanks for your help, RB.
I have removed the PXI6551 boards, and have only pxi6534, 8331, 6602, 5411 installed in my 1045 chassis, but I still have problems with the system which can be describled as below.
When I switch on the pxi system and then my PC(with MIX-4), I can see all the boards work well in MAX by performing self test or by use of test panel. However, whenever I start up my LabVIEW7.1 and try to edit some VIs(without even running these VIs), all the boards would stop working. I open the MAX and use the test panel again and found out all boards failed self test with either the error -10461 or -10401.
The version of my LabVIEW is 7.0 and 7.1, HSDIO version 1.4, Please help...
Those errors usually indicate that the device is already in use or there is a problem using the device driver. When using MXI, it is important to have the chassis powered on before your computer. This allows Windows to allocate resources to the devices in the PXI chassis.
My guess as to what happened is the PXI chassis was powered off, the cards were changed and then the PXI chassis was powered on agian. Since the PC remained on the entire time, there are resource issues and you are getting errors. Try leaving the PXI chassis on and rebooting your PC. I think this will help solve the current issue.