I have a box that I dont have the root password for.
I tried the trick to edit the grub menu, but when I go to edit it, the screen charachters are garbled and I cant see/do anything. Any other time the screen works. Is there a different method to reset the password? Here is a link to the image https://imgur.com/FXIOk9x

I found this, and it may be the method your mentioning. In general, this should work, imho.

Question 1: Does the system boot at all?

Question 2: Can you boot from a live distro (eg. on CD/DVD or USB stick)?
If this is possible, the method mentioned also requires to mount your root partition and execute the '/bin/bash', passwd as root user.
So instead of: "mount -rw -o remount /", you need to do something like "mkdir /mnt/the_root && mount -rw /dev/sda1 /mnt/the_root && chroot /mnt/the_root" (I'm not sure about the 'chroot' right now, also the /dev/sda1 might be different in your case)

Boot from live CD or from any distro rescue CD, mount system and do what you want with grub and rest of system.

(Ah, sorry, "traene" already said that)