Stood on the railway since the release of Ubuntu 16.04, everything was good, every day sitting in it, in another day I run apt update && apt upgrade and went YouTube to watch and then after the abrupt shutdown (neighbors reptiles) are no longer loaded, the kernel panic was a "kernel panic not syncing vfs unable to mount root fs on unknown-block 0 0", in any mode and with any kernel, I decided Ubuntu Live to re-configure GRUB
Have remontiroval all that is necessary, I went through the chroot and executed update-grub showed that everything is OK.
Reboot and the first thing that alerted missing menu hornbeam, thought, well, okay. Then go download Ubuntu and have thought about fixed. But it was not there, the download was some pixel after the logo appeared and the lock screen is also blurred news and so on, trying to log into your account, enter the password and enter the lock screen disappears and then a second later again the lock screen and I rassohina, tried to log in under guest, still.
What to do not to reinstall Ubuntu again well it's all set up?
I understand completely copied the configs of GRUB and no boot options.