For Online Computer Support, Ask a Computer Technician
Hi there and welcome
What is the make and model of the device with the issue?
Can you please remove the power to the monitor (so unplug it from the power socket).
Then wait 10 minutes, connect the power again to the monitor , turn it on and tell me please if it is now operating correctly.
Let me know the results please
If you connect the monitor to a different computer, is it still half gray?