Inspiron 11 3162 - WiFi disconnects by itself

Hello, I have problems with my Dell Inspiron 11 3162 laptop. The connection by WiFi disconnects by itself after random period of time, then it's not possible to connect to any WiFi network until you reboot the system. Using the latest drivers provided by Dell, Windows 10x64 Home, trying to reinstall the OS from Dell restoring image didn't have any effect.

The problem seems like very common but I haven't found any working solution. Trying to flush DNS and TCP/IP stack doesn't help either...

By the way, trying to plug in a USB WiFi adaptor results in... The same issue. The connection is stable for a random time then spontaneously disconnects and there is no luck to turn it back on unless the laptop is rebooted.