im not getting any messages on the screen but my truck wont start up.

What is your question?

I parked and it wouldn't start up again. someone came to help me and pulled out the spark plug and it started up. I drove it again without any problems for two weeks. Now two days ago I parked it and cut off the engine. Trid to restart it again and it wont start. Could it be the crank shift if im not getting a message?