WiFi no longer works when the computer was unplugged

We just got wifi via the border about two weeks ago. Initial configuration must be done with an Ethernet cable, but our jack is not in the computer room, it's in the living room, so we had to move our entire computer in the living room to set up. Well, once it has set me up we unplugged the power cord and the computer still worked on the wireless connection. We did not want to leave in the room forever so we unplugged and he returned to the computer room. Now, he does not connect to internet at all and says that we need an Ethernet cable. I want to know why it worked before wireless, but when we moved he stopped and how to fix it. Any help please?

RCC

You must contact the wonderful support of border.  They know only the correct settings.

However, it may be a driver.  One way to check is to go into the Device Manager
(départ > recherche > le gestionnaire de périphériques), then check the network device to see if there is an Ethernet device and a wifi device listed)

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