Hello!Thank you for your question. I am Shefin and I look forward to helping you with your issue today.
Have you recently changed any display settings?
Could you please press F11 on your keyboard and check if any different?
Can I access your computer remotely and check the issue?
S H E F I N
Please go to the link below, click I agree, download and run Elsinore Client software.
I am glad that the issue has been resolved.