You can just try to pull it off using unstoppable copier. If not, send it out for data recovery.
I don't want to sound like a jerk here, but this is why data recovery is so important. I simply cannot stress it enough.
DO NOT DO THE FREEZER TRICK!!!!!!! You can and will permanently damage the drive as it causes condensation and rush on the platers.
Buy a second 2TB hard drive, download unstoppable copier and just let it go.
Or copy what you need to copy off to one drive, copy more off to another drive and so on.
Titan may not work, 960 may not work either. 780 confirmed to work fine. 970 and 980 needs Nvidia web drivers. 650 Ti I believe confirmed works. Although I do believe some cards require a mod to their bios.