Where is says panel 1 is the correct place for the connectors to the front of the case. Two of those pins are for the power button. Make sure the connector that says pwr, both + and -, are connected to the pins on the board that are labeled pwr.
That’s just a sanity check to make sure the power button is correctly connected. Something less common could be the power button is broken but we won’t go there just yet.
Depending what county you live in, etc. There are nurse hotlines that you can call. That said I’ve never used them.