XPS 430 Vista 64..new power-corsair 750w w/4 6pin

I'm afraid your video card may be faulty.
I myself have an ATI and Corsair build. Installed without a hitch.
You'll need to replace the card. Good thing it is new.
If you haven't, buy some fans for your system as well and install them on your casing. That card runs hot. I have 5x120mm fans in my desktop and it keeps my system nice and cool when I run Crysis or Fallout 3.
But yeah, don't try and fiddle with that card anymore. Put it back in the box and replace it.

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