dnorris,
What is the assembly number that is printed on your board? This number has the convention 18xxxxy-xx, where y is a letter for the revision. If the letter is not embedded in the assembly number, you might see the revision explicitly stated. Since we have different flavors of PCI-232 boards, this will help us better identify what board you are using and see if newer revisions would solve your problem.
It sounds like you have done some troubleshooting. I would suggest removing all other hardware from the machine and trying the PCI slots closest to the processor. If your BIOS has these options, try enabling bus mastering and that plug and play OS is enabled.
What is the exact error that you are seeing? Are the PCI slots different in the new
machine versus the old machine? I am not sure how new your new machine is, so I would also suggest contacting Dell or checking their website to see if you have the latest BIOS version.
By the way, your issue was sent to technical support. However, there was an unexpected backlog of requests after the July 4th holidays. We sincerely apologize for the delay.
Regards,
Geneva L.
GPIB/Serial Product Support Engineer
National Instruments
http://www.ni.com/ask