Anis,
Glad to hear that you got your system working.
As for your question about the PCI slot being damaged, it is hard to say for sure. It could have just been a problem with the way that your computer alloted resources to that slot, for the MXI card. In which case another card may be fine, as it would require different resources. It could be a problem with the computer's BIOS, and a BIOS update might help. Or it could be a problem with the computer. The easiest way to check would probably to try placing a different card in that slot and see if it works correctly. If it doesn't work, it is likely a bad slot, but if it does work, there could be a number of things to explain what might be going wrong.
I hope that helps,
and I hope your application goes smoothly from here on out.
Regards,
Jed R.
Applications Engineer
National Instruments