Hi all,
I know this may be a weird situation, but I need help with this. If this is in the wrong forum section, please move it.

I installed Kali 2.0 (with the default gdm3) to an external hard drive (for portability) and I want to use it on both my desktop and my laptop. Here's the thing: My desktop uses an NVIDIA GeForce GTX 760 and my laptop uses the built-in graphics for my processor (Intel i5-520M). I installed the Nvidia drivers so that I can use Kali with my desktop, and they installed fine. However, I tried to boot with my laptop, and I get the blank screen and am forced to use the command line. I'm guessing that the problem is that I'm using the Nvidia drivers and not the built-in ones. Which brings me to my question:
Is there a way for me to switch between using the intel drivers and the Nvidia ones, so that I can boot to a GUI from both my desktop and my laptop?