Opensuse only boots on default

Greetings, my opensuse 13.1 is running on a hp zt300, it was going great but, after a cople of weeks it stopped booting and it was after I shut it down with libre office and okular opened. It runs now at default recovery mode.
The screen it shows on regular boot is a center square at the center of the screen full of squares with colors.
Has anyone had this symptom?

I'm a completly new user with linux, so my apologies to ho is going to help.

Namaste