I buy a new laptop, and install ROSA Fresh R2, and update it and than install graphic card from "set up the graphical server" and it download and install drivers after restarting I cannot reach the login screen after boot splash screen it stay there and some words write there for example
"Failed to start wait for plymouth boot screen to quit" and nothing happen

How can I solve that?
Graphic card is ATI Radeon HD 7670M