Dell 34 Curved Gaming Monitor S3422DWG

Hello I have a Dell 34 Curved Gaming Monitor S3422DWG. 

It was just purchased 1 months. I was working perfectly. White working the display become white screen always. I turn off the monitor remove all hdmi cables and start again its shows white screen. I try to remove the power cable to connect back . 

Even though press all button and joystick , there is not output in the screen. I have only basic support until 2027. Its quite heavy monitor will executive will come to home o service or i have bring that monitor to Dell service center . 

Thanks and regards