I recently switched out my Radeon 6950 for the GTX 780. Ever since I've done that, however, I've been having problems with GPU-Z. Whenever I try to start it up, it makes it to the splash logo, but after that disappears the main program never comes up. At one point it started working again when I downloaded the latest version of GPU-Z, but now it's gone back to not starting. I'm using version 0.7.5, and I uninstalled the AMD drivers and installed the latest Nvidia ones, so I'm not really sure what's causing this. The OS I'm using is Windows 8.1. Any help is greatly appreciated, thanks.