@Kevin_Z es I have. this is how I go to the current solution - reflash FW and its back. No reboots, no factory resets, no changing of the settings could help... ://

Same issue with Archer C7 AC1750. Turn it off at night, every 10th or so power on wirless is disabled, lights are off, however UI shows everything's OK. the only option at that point is to re-flash....