I purchased a Dell U3417W monitor for business use in late November 2018 from a Dell re-seller. Over the past couple weeks, I have been experience a screen glitching issue where the screen pixels create vertical lines. The monitor is connected to an HP ProBook 650 G4 laptop through an HDMI cable. Operating system is Windows 10. See image attached. This seems to happen randomly (the vertical lines are also random colors each time) and frequency is about once every three days. 

I have performed a "hard" reset and ran self-test just this morning. Any ideas on how to resolve? Would this be covered under warranty?