For I don't know what reason, my laptop has got stuck in airplane mode. Using my PC I've looked on the 'net for solutions, and tried going into Settings (the cog-wheel icon) > Network and Internet >
Airplane Mode, and tried turning off the toggle there as per many instructions, but it's actually greyed out and won't do anything. Until I get it switched off, nothing else works, no WI-FI, no nothing. Re-booting doesn't clear the problem.
What can I do next?