I have a problem since today. My laptop no longer finds a network, no matter if it's our WLAN or that of our neighbors. If I plug in the LAN cable I have limited access but no internet. All other devices in the WLAN are normal. Multiple on and off did not help Virus scan does not say anything either.
Have you checked the adapter settings times if DHCP is enabled? And is DHCP enabled on the router as well? Alternatively, you can try it with a fixed IP.
You have to do the following:
1. Under certain circumstances in the web interface of the router reserve an IP, which is optional with some routers
2. In the adapter settings of the device (I would try it with LAN first) enter a static IP address at the IPv4 address that matches the IP network of the router. Usually something like 192.168.0.50 for example. The subnet mask is 255.255.255.0 (also, usually). As DNS / Gateway the address of the router should be entered, also here it can vary, it is usually something like 192.168.0.1 or something in the kind.
Do you find the settings or do you need a more detailed description?
I just did a system restore until the day before yesterday because yesterday came an update. If that does not work, I'll try your suggestion.
With some laptops one can deactivate the network connection over a key combination. This usually works via the FN key and one of the F keys (F1 to F12).
Since I would look, if this is possible with your device and if so, whether the problem is resolved.
Otherwise, I would simply reset the network settings of your device. Open the Command Prompt (cmd) as administrator and execute the following commands:
netsh winsock reset
netsh int ip reset
ipconfig / release
ipconfig / renew
ipconfig / flushdns
netcfg -d
Then restart your laptop.
With the smartphone you should come to the interface of the router, but otherwise connected by LAN cable directly to the router.
You then only need to know the address of the router, as I said in the rule 192.168.0.1
If you've connected and waited, you can go to the command line (invoke cmd) and enter "ipconfig / all", without the quotes.
Then you should see the address of the standard gateway with the Ethernet adapter somewhere.
Possibly. Are you haunting the power-saving feature of Windows after the Windows update in the soup?
Suggestion:
Drive down the laptop properly and then restart it properly.
(Sometimes restart the router can't hurt)
Here it is explained in detail:
https://extreme.pcgameshardware.de/internet-und-netzwerk/534378-kein-wlan-mehr-nach-windows-10-update.html