Windows 10: Wifi stop working. Win10 shows only one network and it doesn't connect

Product Name: Hp Omen 15
Operating System: Microsoft Windows 10 (64-bit)
Wifi card: Intel Wireless-N 7260

Hi guys,
since some days my wifi has stopped working.
If I click on Wifi icon it shows only ONE (max two) NETWORK:





And I live in a building with 20+ networks, as you can see from WiFi Analyzer (I'm the red one on the right)




If I deactive/reactive Wifi with fn+f12, it goes to Airplane mode and to Wifi mode again and it eventually shows all the networks:





My Wifi is on the top. If it's saved, Windows connects to it and then it drops the connection; if it's not saved and I try to connect, it says "You're not able to connect to this network".
The fun fact is that after some seconds every network disappear and only one is showed (probably the neighbour one..I dunno).

I've already tried to HARD-RESET the notebook keeping the power button for 10/15sec with the laptop turned off.
I've already tried to follow these instructions (HP PCs - Troubleshooting Wireless Network and Internet (Windows 10) | HP® Customer Support) updating drivers (Intel 18.12.0.3, 18.12.1.2, 18.30.0.9 [Windows 10 default], 18.32.0 [Lastest drivers]) with no success. Everytime I install a new drivers, I uninstalled the previous one + Wireless software + reboot.

I tried to uncheked "Allow this computer to turn off this device to save power" on my Wifi hardware settings without success.

The HP Network support says I didn't choose a Wifi (Really? The problem is I don't see my Wifi on the list!).

This is not related to a new Windows 10 upgrade since I've installed it months ago and It's the first time I've this problem :/ It always worked



I tried different settings too:
I changed channel, I set 802.11g on my router, APSD off on the router.
I set "Magic packet off, ad hoc QoS off, U-APSD off, fat channel off,incremental throughput off, HT mode off" on the card setting without success. Nothing chaned.

The Hardware test doesn't detect any failure.


Note carefully: If I go close to the router, it shows my network with full power connection and it connects to it. Then I go back to my bedroom (probably 3/4 meters far), it KEEPS the connection for 30/40min and It drops the connection and I can't reconnect to it anymore. It always worked perfectly in my room in these months (I bought it in March 2015), so the distance is not a problem, I'm 6/7m far from the router.
In this case It shows my Network (Connected) and the neighbour network...and the other 20+ networks???

The only way I have is USB tethering with my Nexus 5.

Linux: I tried the Wifi connection on Elementary Freya (Ubuntu linux based OS) and it shows 20+ networks available on the list. It has not connection problem with my Wifi, but sometimes it stops working, the webpages stop loading and I must reboot Wifi to reconnect to it (usually after 30/40min using it).

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What's the problem? Is my Wifi card broken? Should I call italian support or you have some suggestion?


:)

 

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Trying to use alfa AWUS036NEH usb adapter.

The wifi networks are available for WIFI 1 for the onboard network adapter which works fine.

The problem is I am trying to use a USB long range usb adapter.

This shows up in settings as WIFI 2 and show the available networks.

However it doesn't show up in available networks to actually pick to connect to. When I had win 8.1 it showed both sets of available networks.

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I did a restore factory with HP recovery (I've a dedicated drive for it) and....it worked! *Smile
I had to upgrade Win8.1 to 10, but the Wifi problem is solved! *Biggrin

I'm still guessing which was the problem...
Now I'm running Intel drivers ver. 18.30.0.9 and all the networks are working.

In the next days I'm trying to check the linux problem (the factory reset deleted Elementary partition).