This question already has an answer here:
- Ubuntu gets stuck in a login loop 18 answers
I'm using Ubuntu 13.04 with Unity. Whenever I log in into my computer, the screen becomes black, then purple (that dark ubuntu-color) and that switches a few times. Between that the screen shortly shows a nvidia-logo. Then it switches back to the login-screen.
What is wrong with my PC? What can i do? I hope you could help me...
PS: Sorry for my bad english, I'm no native speaker.