touch screen not working

[Kay4]

5D Mk4, had the camera serviced for year end and now the touch screen doesn't work. I put it back to factory settings and still nothing. Any suggestions what to do?

[jrhoffman75]

Give Canon a call at 1-800-OK-CANON

[Kay4]

Thanks

[kvbarkley]

Dumb question: Is the lock button set to "Lock"?

[Kay4]

No it isn't. My settings for touch screen is completely missing. I think I will be making a trip to Canon tomorrow.  Thanks for responding/

[kvbarkley]

It is not a setting, there is a slide switch at the lower right on the back of the camera.