Wi-Fi network is not displayed on the PC, but does it appear on the cell phone and laptop?

After a great deal of despair, I report here in the hope of getting advice. And a few months ago I noticed the problem on my home PC that my network could no longer be displayed via LAN. I then noticed the problem myself, a connector was defective.

Anyway, yesterday I bought a USB Wi-Fi network adapter that seems to work perfectly. New drivers loaded with the CD, device and drivers run flawlessly. I was shown all the networks in the building, except mine, which of course I want to log in to. The funny thing is that this connection could be displayed on my laptop and cell phone and today on a foreign cell phone.

I really did everything I could as a layperson to fix the bug. Of course router restarted, also reseted, manually searched for the network on the PC, etc. Really everything through. I also reset my PC to the factory settings in case I changed a driver. That doesn't work either. I called Vodafone and they said the router was working properly, it was sending Wi-Fi. It was even displayed in the router menu. Both the PC and the router both seem to be perfectly okay. Even if a technician comes by soon, I don't think this problem can be fixed. Does anyone have experience with this problem?

You have surely deactivated 5Ghz or 2.4Ghz in your router

Check the 2.4 GHz network or change the channel in the router

Both are activated, I also tried them both individually. This also did not lead to success.

Do you have Skype? Let's look at the problem together.

Go to the adapter and update the driver. Somewhere at Win10 (no computer there at the moment) you can also reset it or something.

Check to what extent? According to the router menu, both 2.4 GHz and 5 GHz are on, both receive the channels automatically.

Yes then change the channels at 2.4 GHz and see if your Wi-Fi shows up

I'm shown numbers from 1-12. Select all times and see if the network then appears?

So now I have tried every channel at 2.4 GHz. Didn't show up…

Tried already, nada.

Perhaps your WLAN stick (please name the manufacturer and model of the stick!) Does not support the WLAN standard (a, b, g, n, ac) or the encryption (WPA, WPA2, …) that you set in the WLAN router (please Name the manufacturer and model of the router!).

There are a, b, g, n, ac WLAN standards.

What your WLAN stick can do according to the driver can be determined in the Windows command prompt (cmd).
Start the command prompt and enter the following

netsh wlan show driver

and send it with Enter.

Here is an example of the command:

https://www.pcwelt.de/...te,3452329

To find out more about the current properties of your Wi-Fi network (channel and encryption), you can use this free Android app Fritz app Wi-Fi with an Android smartphone. It is very helpful to learn more.

https://avm.de/...zapp-wlan/

PS:

Please do not set WLAN channels arbitrarily, my recommendation is:

Good 36 GHz ac channels (without DFS) are channels 36, 40, 44 and 48.

Good 2.4 GHz (overlap-free) n channels are 1, 6 and 11 (do not select intermediate channels!)

So my WLAN stick "TP-Link TL-WN823N WLAN USB Stick (300Mbit / s 2.4 GHz, mini size adapter") has the following as WLAN types: 802.11b, 802.11g, 802.11n
As a router, I use Vodafone's Vodafone Station, probably the best-known router from Vodaphone.

WPA2 is set as encryption in the router menu.

So even if it were a very logical solution that the stick is not compatible, since the router and PC seem to be working properly, it is unlikely in this respect because this stick is one of the most sold of this type and the Vodafone station is by no means a " is "unusual" router.

That seems to be a tricky and common problem.

When I ask Google

vodafone arris tg3442de realtek wlan not found

I find a lot with this problem when combining Realtek Wi-Fi chip and Vodafone station!

https://www.google.de/...s-wiz-serp

I don't see any gross mistakes there either. You have already tried a lot of things and the technical data fit together.

The Stick n standard with 2.4 GHz should be able to be operated with the Vodafone station in the n standard.

Here is something that the Vodafone station somehow does not get along with a Realtek chipset (= WLAN chip): https://forum.vodafone.de/t5/Internet-Ger%C3%A4te/Wlan-wird-nicht-mehr-angezeigt/td-p/2052919

I mention other possible causes:

### Install exactly the right driver for Windows:

Install the correct driver of the stick (pay attention to the hardware version of the stick, it says on the stick! There are V1, V2 and V3). Here are the drivers:

https://www.tp-link.com/de/support/download/tl-wn823n/v1/

### Restart your router (via the configuration page!):

So do not pull the power plug of the router, but restart the router via the configuration page of the Vodafone station.

### Delete WLAN profile correctly in Windows:

Delete the WLAN profile in Windows (maybe there's some nonsense in it), this can be done with the button "Do not save" under known WLAN networks. Look (below) on this page it explains:

https://praxistipps.chip.de/...ehts_11851

Then hopefully you can connect to your Wi-Fi very freshly.

### This Microsoft guide could also help:

I tap "Reset the network adapter driver"

https://support.microsoft.com/...ion-issues

I saw exactly this problem afterwards…

I will do the following: I will buy new DLAN adapters, since my old one was apparently defective, then I can see whether it works or not. If not, then the network card will probably be broken, then I'll get a USB network adapter. That should really be the final solution (hopefully!) And I have internet on my PC again. Or?

You can't do any more on the router. You may have to look for the driver on the adapter and check whether the wrong country is selected in the driver settings