Welcome to the forum, sorry to hear about the problem.
I think you are experiencing the same thing that nearly all of us have experienced - something is wrong, now what do I do?
I'm glad you posted the question rather than just getting angry.
There are some things that would help us to better answer your question like - how many hours are on the machine.
And, what do you mean by "Suddenly the carver ran off path and into the board" - did it go off the pattern sideways or just down?
If there are quite a few hours on the machine it could be dust in the encoder, but several other things may need to be looked at.
Something that may help is to understand that the Search function works with multiple words if you put them in double quotes (like "Z axis stall").
Ken,
V-1, 2, & 3
When the People fear their Government, there is Tyranny.
When the Government fears the People, there is Liberty.
- Thomas Jefferson
You must be the change you wish to see in the world.
- Mohandas Gandhi