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Hello, my name is***** what you are saying it sounds like the ignition switch may be failing. This will cause the vehicle to not start and it will cause the instrument cluster and possibly other electrical systems to go haywire at times. It would need to be tested when the problem is occurring, but it sounds like the switch has an internally shorting circuit. It may also be a bad connection at the fuse box under the hood but that is not nearly as common. I hope this helps. Please let me know if you need anything else.
The ignition switch closes the circuits for several circuits so it can affect some and not others. I usually test it, but it can be a bad ground connection or a connection issue in the fuse panel.