To the OP, if you're still reading this thread, the best option at present is to go into the BIOS and look for graphics settings there. If you can disable one of the cards it should get things going. Your battery life (time between charges) might be drastically affected by which card you use, so I hope they let you choose which one to disable. Otherwise you are stuck with a lot of reading and unfriendly experimenting with kernels, boot scripts and compile-time settings which is beyond the scope of this forum. (I had to do it with my laptop which runs a kernel pclos has never used, but my hybrid graphics isn't nvidia.)
To the hijacker, you probably need to do something similar, and disable the onboard graphics so you can run the nvidia.