We have found 2 possible solutions to your problem.
Before you start this troubleshooting guide you need to check one important thing:
Can your router find a network?
Yes
No
Why do we ask this question?
It's important to find out if your router can find a network. If your router can't find a network, you need to solve this problem first. When the problem is solved, you will most likely also be able to establish a connection to the internet.