So, here is my problem: i've just installed xubuntu 12.04 with a pen drive. Everything went well but when i reboot the laptop: xubuntu didn't start. I only get a black screen. The only way to start xubuntu is with the installation pen drive. The weird thing it's that it's not a live session: the pen drive its needed to start a normal session. So i've tried to make a fresh installation but it's impossible to to boot to install, i end up in xubuntu normal session. Any ideas? Thanks in advance. Cazador.