Thank you for your message. How often does the screen flash?
Does this happen when using any application in particular?
Is the issue observed when the system is used as a standalone & when not connected to the docking station?
Do you have a 4K monitor connected to the system?
Is the issue observed when you wake the system from sleep mode?
For my reference, please click on the message tab next to your avatar– click “New Message” & search for my Dell username (Sreejith R) & send a private message with the service tag, registered name & email address.