This article explains why pressing the power button on an RJ45 remote doesn't work, and possible solutions
There are a couple of possible reasons the monitor may not turn off when pressing the Power button on the RJ45 remote. Please see below.
1. The Power button is locked out.
a. To fix this you will need to refer to the product User's Manual in the OSD section and follow the steps for enable/disable the Power button. See example below from the 4243L User's Manual:
2. Windows Power features preventing shut-down.
a. If you are connected to a Windows laptop or pc, it may be possible the Windows Power features are preventing the monitor from shutting down. To check if this is a possibility see the below steps:
i. Go to Settings System Power & sleep and click on Additional power settings.
ii. Select the Choose what the power buttons do link.
iii. Use the drop-down menu under When I press the power button, and select the option you want such as Shut down or Turn off the display, Sleep, etc. After making selection choose Save Changes.
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