Where are the problems when connecting Ubuntu 12.04 to a TP-Link TL WR741ND router?

Question

ubuntu

Hello.
I have a Dell Inspiron 5521 laptop with Ubuntu 12.04. When connected to a TP-Link TL WR741ND router, a permanent password request occurs, without connecting. It discovers the network. Blackberry, Android, Windows 7 connected perfectly to the router.
This is the first time this problem has happened with a laptop. It successfully connected to hundreds of different routers.
What could be the problem?

Answer 1

1. Reset the router, connect it to the laptop via a cable, and set it up from scratch.
2. Maybe you have a problem with wi-fi on your laptop, try to take another router and connect to it.

Answer 2

The same router, a friend came with a laptop and tried to connect, connected to the network, but there was no access to the Internet, which he just didn’t do on a laptop
. it became normal, the Internet appeared.