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Yesterday I was watching a video on youtube and suddenly my laptop got frozen.

I wasn't able to even move my cursor, so I gave it 10 min and after no response, I pressed the shutdown button for 5 seconds and rebooted my machine.

When it rebooted, it presented me the following screen:

Since than I've been searching the internet for any way to get pass this with absolute no luck.

Bellow I'll leave all the steps I've tried so far:

[First I was having problems enabling networking so these were the steps that helped me:]

• selecting the option Advanced options for Ubuntu
  

• choosing the option Ubuntu, with Linux 4.4.0-66-generic (recover
mode)
  
  


• selecting the option Enable networking from the Recovery Menu

• when it finishes and returns to the Recovery Menu, I select the
  option Drop to root shell prompt




• and then running the following commands with my Ethernet cable
  plugged in did the trick:

Commands:

/etc/init.d/networking start

echo "nameserver 8.8.8.8" > /etc/resolv.conf

Then I followed this answer referring to this link and repeated the commands for about 10 times each in random order as described in the post:

apt-get update

dpkg --configure -a

apt-get dist-upgrade

apt-get -f install

And I also tried this: answer

cd /etc/dhcp/dhclient-enter-hooks.d

sudo rm debug

sudo ln -s ../debug.dbkg-new debug

cd /etc/dhcp/dhclient-exit-hooks.d

sudo rm debug

sudo ln -s ../debug.dbkg-new debug

After all of that, my machine is still showing the screen in the first image.
At this point I don't know what more can I try so I really need some light on this.

Don't know if this is relevant but this is my uname -a:

Linux rm-pc 4.4.0-66-generic #87-Ubuntu SMP Fri Mar 3 15:29:05 UTC 2017 x86_64 x86_64 GNU/Linux

Also when I executed journalctl -xb and this are all the red lines in the code:

I had this same issue. I had to go into the recovery mode for the 64 Kernel (65 was showing but it wouldn't let me do the apt-get update even after enabling networking) then enabling networking. Then I did an apt-get update and the dpkg --configure -a.

It stalled in the middle of that showing Loading Braille support... I had to press Ctrl+Z to get out of it and then do it again to finish. I think I did this 3 times before it finished unpacking and installing the 66 Kernel.

Once that was done I was able to boot it fine. Once in the GUI I was able to do another apt-get update, dpkg --configure -a and everything was fine. I also ran apt-get autoremove to get rid of all the old kernels. I'm back up again!