GNU/Linux Kali Installing NVIDIA GeForce 830M Driver Guide
How to Install NVIDIA GeForce 830M Graphics Driver on Kali GNU/Linux Desktop – Step by step Tutorial.
The NVIDIA GeForce 830M Driver Kali Setup is Simple and involves only the Execution of few Basic Shell Commands.
Moreover, following the NVIDIA Recommendations is better to use the tested NVIDIA Linux Graphics Driver from the Kali Repository.
Then with the nvidia-settings Tool you can configure Brightness, Gamma, XVideo attributes, Temperature, and OpenGL.
Especially relevant, prior to the Driver Setup you may consult:

GNU/Linux Kali GeForce 830M Driver Installation Guide