I've used EVGA cards before. Seemed to run fine for me. Check for updated drivers from Nvidia for the 9500 chipset if you haven't already. I just updated mine and it fixed a lot of problems I was having with Win 7 Aero.
That floppy drive clicking is
really weird. The last time I had a floppy drive installed in my PC it went bad and blew out my motherboard. I ripped it out and haven't used one since. That's been, oh heck, at least 5 ~ 6 years now.
Good luck with it. Sorry to hear about all the little bumps you're running in to. I still haven't received my boxed version of X1 yet from Sweetwater.