It is a kernel issue. If you start the system from the sub menu with kernel 3.16.0.34 system will boot into login screen. Using kernel 3.16.0.36 will cause a system hang on bootup at the point
... Installing initial ramdisk -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1450905 Title: Why is my laptop not booting up after a major 112M update yesterday? Status in linux package in Ubuntu: Incomplete Bug description: Running Dell Inspiron with Ubuntu 14.04.2 LTS only. After a major 112MB update yesterday, laptop will not boot up properly. I have to manually power it down and reboot it to get to use a previous recovery mode. Is their some way to correct this issue? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1450905/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp