screen/system freeze

[NN]

Tried to reconfigure grub...."directory non-existent"

Certainly, the directory SHALL be non-existent, until you mount the device with your Linux! 8)

Do you remember the terminal command? Here it is:

Try to reconfigure the grub:

sudo update-grub --output=/mnt/boot/grub/grub.cfg

mnt = mount the boot partition for the grub

Open gparted (it should be included in the distro) to see what number is the sda partition of the device with your prior Linux (in case you have several Linux'es on your HDD).

I have my Linux on /dev/sda6 (your number may be different).

When you find out the number of your sda partition, do the following (step by step):

sudo mount /dev/sda6 /mnt

sudo grub-install --root-directory=/mnt /dev/sda

sudo update-grub --output=/mnt/boot/grub/grub.cfg

Change "6" for YOUR number in the first command!!!

Wait until every command finishes successfully.

That's it! Enjoy!