If your Nintendo Switch doesn’t work, don’t worry, it’s something that can happen frequently and in many cases has an easy solution. The first thing is to check the Nintendo error code that appears on the screen of your Nintendo Switch. With the link provided you can try to fix the error yourself without needing Nintendo technical support or professional repair.
Now, if the console doesn’t turn on, I’ll leave you a few steps so you don’t get alarmed too quickly. First check that the battery is charged with the original charger
I hope I have helped you find a solution if your Nintendo Switch is not working. Do not hesitate to consult the links from first paragraph to check the error on your console.