Unable toboot with Nvidia GTX 750 ti, even with latest beta drivers

Yesterday I got a Nvidia GTX 750ti for my htpc (ubuntu headless 12.04) but the computer wont boot with it installed.
I've tried booting with nomodeset parameter and installing the latest beta driver from nvidia but I get black screen on boot. The machine does not seem to boot as I cannot ssh into it or invoke ctrl-alt-f*