DH can come up with a list of questions to help you troubleshoot, but they might be long.
What's actually happening? What's not working? Is it not turning on? Are you not able to see anything?
Can you get into Network? If you can, it'll ask you to do wired or wireless. Does your network appear in that list? If yes, when you select it - it'll ask you to enter your password. It should then go through diagnostics on its own trying to connect. Do they go through OK?