It is checked, I have also tried rebooting with it plugged in per another suggestion I found on a Google search. Light flow is an app to control the LED and customize the colors, I intended to see if a third party app could work around the issue of it no longer working in Android itself. I just checked with LED tester and nothing. A shame to discover a hardware failure with the LED on a $499 tablet. I was actually getting used to the feature on my phone and welcomed it on my tablet but if it failed, it failed. I have tried everything and cannot revive the LED. I never ever dropped or abused it so it bugs me that it failed for seemingly no reason.