Oddly though, 'turn it off and back on again' or 'try disconnecting and reconnecting the cable' really does solve a remarkably large number of tech related problems. Arguably a non-expert without any special knowledge is probably quite rational in trying that as the first approach to solve any given tech related problem. It may even be that the next best thing to try if it fails is to try it again. Further attempts probably have rapidly diminishing utility however.