Can't connect to WiFi, do not request password

Background:

I have just arrived at my parents for a 2 week stay at the course and I'm trying to access their WiFi. At first, it was fine, that my two computers acceding WiFi (Alienware with Windows 8.1) and Toshiba again with Windows 8.1. Yesterday (after 5 days of no worries of access), the Alienware wouldn't connect and no more than my mom's computer. So I replaced the modem with a newer LinkSys modem and to set up a wired connection. It is all set up. Computer of my mother to return on the internet but the Alienware can access only a wired connection and Toshiba recall has not wired port has no access.

If I click on the Linksys WiFi network, it tries to connect but do not have the password. If I try to access the neighbor's WiFi it asks password.

That's what happened on the old modem until I changed it to the wire. The Alienware wouldn't access their modem (named David) and now will not access the Linksys modem (which was a modem I used for about a year). Nothing has changed except passwords.

I tried to reset and restart the modem.

I tried to turn on my computer, shut off again.

How is it that computer Windows 7 of MOM can access the wireless, but none of my computers Windows 8 may?

I fixed it-I have been made a click right on the settings for modems and clicked on "Forget this network" and then reconnected. Sweet! Fact! Fixed. Solved.

Tags: Windows

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