Distortion post recording

I’m recording a guitar on Cubase Elements 8. As I record the sound seems clean in the headphones and the track looks normal on the screen. When I finish recording after a very short delay multiple vertical lines appear on the track on screen and it sound a distorted mess. I’m not pushing the track into the red.
Any suggestions?
Thanks

Tell us more…like how you’re connecting your guitar to Cubase or if you’re micing an amp or recording an acoustic guitar with mic.

A pic of the vertical lines you’re talking about might also help.

Could you send a screenshot with the vertical lines, please?