I’ve done with many things.
Checked my monitor, even tried changing.
Did SFC, DISM. (as guided by Microsoft)
I have done clean installation of Windows 10 again. (as adviced by Microsoft and done by Lenovo-my PC’s manufacturer)
Please help me to point out the issue if anyone has experienced or could guess. Because Microsoft’s support have told that it’s hardware and Lenovo is having no answers.
I am attaching the snap of that…