Where do I start when the network goes down?

When the network goes down, everything feels urgent at once and you do not know where to even begin looking. That panic is normal when you are new to it. The problem seems like one giant failure, but it is not. It is a chain of small pieces, and only one of them is usually broken. Your job is not to fix everything. It is to find the one link. Start close and work outward. Is it just you, or everyone? Can you reach your own device, then the local network, then the gateway, then the outside world? Check each step in order, from nearest to farthest, and the point where it stops working tells you where the trouble lives. A calm, ordered check beats frantic guessing every single time. Write yourself a simple checklist now, before the next outage, that walks from your machine outward step by step. When something breaks, you will not have to think under pressure; you will just follow the list. You are not bad at this. You only need a method, and method is what turns a scary outage into a series of small, answerable questions.