Windows menu layout

Solution
You've removed some of the "stock" tiles, and you'd need to re-add them by selecting them from the program list, right clicking and "pin to start".

As for the full menu: Start>Settings>Personalization>Start

I believe everything is set to "on" by default.
You've removed some of the "stock" tiles, and you'd need to re-add them by selecting them from the program list, right clicking and "pin to start".

As for the full menu: Start>Settings>Personalization>Start

I believe everything is set to "on" by default.
 
Solution