Black screen - dependency failed

My screen is stuck on a black screen and after that nothing is working. All I received is that my dependency failed for mnt-FB40\x2d5523.mount - /mnt/FB40-5523

Can someone please help me on how to get through this?

I suggest you boot off the live media you used to install Zorin.

Choose 'Try Zorin' and once at the desktop look for Boot Repair in the menu. Run it and see if it sorts the issue.

If it reports that it has not made any changes, shut down the device and remove the installation media.

Boot up your machine. If there is no menu shown and you are back at the black screen, drop to a tty console by pressing Ctrl+ Alt+ F2 through to F6.

You will get a login prompt. Enter your user name you setup when installing Zorin and press the Enter key.
Next it will ask for your password; be careful how you enter your password as you won't be able to see what inputs you have pressed in this field.

Once logged in use the following information for the instructions below it:

" To resolve this, users typically need to boot into Recovery Mode or a Live USB environment to disable or remove the faulty mount entry from the /etc/fstab file. The specific mount point /mnt/FB40-5523 likely corresponds to a device (such as a Mitsubishi Forklift data drive or similar hardware) that is either disconnected, has an incorrect UUID, or has permission issues preventing the system from completing the boot process."

To edit the fstab file from the command prompt, you will need to issue the following command:

sudo nano /etc/fstab

A new console window opens. Look for the offending mnt entry and place a '#’ at the beginning of the entry. (This is similar to adding 'REM' in the Command Prompt on that other OS).

To save changes, press Ctrl+ O; you will be prompted to save changes to /etc/fstab, press the Enter key to accept.

To exit the nano editor press Ctrl+ X.

Now reboot your machine.

What happened before that? Did You installed any Software or did You received any Updates? Did You connected any Hardware?

Was this when you first installed Zorin or had you been using it successfully for a while? Could be graphics related, or something else. We need more information about how you got to the black screen in order to identify likely causes and solutions.