There’s a fine line between being helpful and having people groan when you state the obvious.
But the two are very closely interlinked in almost every niche.
The standard first thing to do with electronics is turn them off and turn them back on again – my broadband supplier even had that as part of their initial instructions when you rang up to report a fault, before you got to the option of pressing numbers in an attempt to get through to the right department.
Back when forums were popular, the same few questions got asked over and over and over again.
Now the sticky post in Facebook groups often tries to cover how to search for common questions (use the search box!)