Today I performed fresh install of Ubuntu 13.04.
After this I tried to install Nvidia graphics driver.
I used 2 methods:

1. How do I install additional drivers?


2. http://falkvinge.net/2013/02/15/how-to-install-nvidia-drivers-in-ubuntu-12-10-quantal/

Both of them with the same result. Black screen with some text on it.
I saw that many ubuntu users have the same issue. Nvidia drives just broke the system.
Not sure If I can say that Ubuntu is so user friendly system if you just press install in Addidtional drivers tab and you can say goodbye to your OS.

How this can be fixed? Does anybody know some other ways?

Thanks in advance.