I have a 750 Ti and to get it running I do the following on my 64-bit intel system:
EDIT: I'm sorry that I didn't notice you were running Jessie, but perhaps some of the below will still apply to it.
Here's my notes for getting it working in Debian 7.5:
After installation screen will hang at nouveau issue.
Temporarily fix by rebooting & passing GRUB parameter nouveau.modeset=0 at end of Linux line, do this by pressing 'e' when the GRUB menu appears & then at the end of the relevant kernel line, I think it usually ends with the word 'quiet', put the string 'nouveau.modeset=0' without the '' things. Then press CTRL+X, I think to get it loading.
This should get you all the way into X desktop.
Then once loaded, add line 'options nouveau modeset=0' to /dec/modprobe.d/radeon-kms.conf
cynwulf above posted something similar for 'blacklist-nouveau.conf' but the above works for me. This will give you a system that can boot to X.
I then download the latest beta drivers from
http://www.geforce.com/drivers/results/76396/.
From command prompt as root, do $ aptitude install build-essential linux-headers-3.2.0-4-amd64
Note: the linux-headers are for my system, if yours isn't AMD/intel 64-bit it would be different.
I've got a note at this point that says to install multilib, but I don't recall doing this the last time around, but if the below doesn't work come back to this step & maybe need to run $ dpkg --add-architecture i386
And then do
$ aptitude update
$ aptitude safe-upgrade
Exit X via going to Ctrl+Alt+F2 terminal & as root, doing $ service kdm stop. Then do Ctrl+Alt+F2 to get back to the terminal you were at.
The above is for KDE desktop, I think 'gdm' would replace 'kdm' if you run a Gnome flavour of Debian.
Need to make the installer executable, thus: $ chmod +x NVIDIA-whatever-installer.run
The above line obviously includes a placeholder filename in my notes, I'm sure you you get the idea.
When just running the installer it complains about GCC version 4.6 vs 4.7 mis-match.
Fix by running it thus:$ CC="gcc-4.6" ./NVIDIA-whatever-installer.run
I said yes to installing the 32-bit libraries.
Reboot.
Note: to uninstall just add --uninstall to the command.
