Hi, I recently installed Kali Linux next to my Windows 7 installation. When I successfully finished and restarted the computer, I selected Windows in Grub to check if it was still working. It didn't and I had to load the Windows 7 rescue cd, which seemed to fix the problems. Another restart and again selecting Windows and everything was fine. Then I tried to start Kali from Grub. The login screen appeared and I entered root and my password. When I clicked on login, my screen freezed and I couldn't do anything. I've seen many posts about that problem, but I didn't have any success. I think it's something about my graphics card (GTX 960), and drivers are missing.
Thank you for your help and ask if you need any more details.