Descarga la iso de ubuntu nuevamente, quizas sea un problema de la imagen, o verificar si la iso esta buena, tambien puedes hacer un una actualizacion a desarrollo para ver si esto se mejora, ejecuta en la terminal sudo apt-get update sudo apt-get upgrade
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/930447 Title: Unable to start Ubuntu 12.04 live CD with syslinux loader on Pentium M x86 Laptop due to bug in PAE kernel, initramfs or syslinux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/930447/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs