My Word...this thread lol!!!
I am MS certified so may be able to help.....
Firstly one User mentioned that your BIOS is on the 1st memory stick, this isnt true, its on the CMOS battery or a built in ROM chip, your memory that you are referring to is RAM and NOT ROM.
I think what the User was referring to is that when your PC boots up the first thing the BIOS does is check the information stored in a tiny (64
bytes) amount of RAM located on the CMOS chip, this is why Asus asked you to reset your CMOS (probably by simply locating and removing it then re-inserting it)
I had to get that one out the way.....
Back to your initial problem....
Now XP can be a nightmare with USB devices sending Windows into an eternal loop.
Your FIRST point of call should be to go into Device Manager and from within there click on "Show hidden devices" (or something like that in the VIEW options - forgive me, its been some years since I used XP)..Once you have done that you will find that XP has cached numerous amounts of USB devices over time, go through them and delete the repeats and the ones you dont use. Reboot.
Then Plug in your NI controller and install.
Once you have done that get back to me and maybe I can help.
Hope this helps.