Network problems although PC does not have an Ethernet connection?

In the past few days I have had the problem that I'm doing home office and suddenly my internet or network connection stops working. I'm connected to a network, but it still doesn't work. It works with my other laptop, but not with this one. I reset all networks yesterday to see if it works. I displayed the error messages in 3 pictures below.

Maybe one of you knows what that could be? My laptop has no ethernet connection at all.

Greeting

Your laptop should have an internet connection, because Windows recognizes an internet connection. Check again carefully, sometimes the hind flaps are hidden and google LAN connection and take a picture as a reference if you don't know exactly what it looks like.

Your network adapter appears to be a LAN connection (cable). This can be a driver / software problem, but it can also indicate that the WLAN module is defective.

What surprises me is that you seem to be still connected to the network. This could also indicate incorrect router settings (e.g. MAC filtering).

If it is because of the driver, you could try to reinstall it (but a little difficult without Internet):

Open the device manager (right click on the start icon → device manager), uninstall the driver for the network card / network adapter there and then try to install it again ("Search for changed hardware"). With luck, the driver will reinstall itself.

Otherwise, download an appropriate driver from the Internet, load it onto a USB stick and connect it to the laptop to install it.

Thanks for the answer.

I have a Lenovo 910, only 1 USB (Superspeed) port and 2 USB-C ports.

I will definitely do that if this error occurs again today.

Maybe it can. Also have to do with the fact that a colleague connected to his network at home on my laptop a month ago?

Oh yes and I have the Internet, usually only 1-2 times a day the connection fails at once for 1-2 hours. In the other time I could possibly reinstall the driver.

Usually (what a nice word…) that shouldn't be the problem. WLAN adapters are designed to connect to different WLAN networks (similar to a smartphone).

Does it help if you restart the computer when the problem occurs? Doesn't sound like a driver problem to me if it sometimes works and sometimes it doesn't.

A weak or defective antenna could e.g. The reason for this is that the signal is only weakly received. In addition, a mechanical defect inside could be decisive that the adapter e.g. If heat develops (if you use the computer) fails. There can be several reasons for this. In any case, I would try as much as possible before I have the device repaired.

You will then have to connect it via Wi-Fi.

Both apply, often I switched it off, waited 30 minutes and then it worked again. And yes, the heat development on my laptop is violent. The ventilation of this model is very bad. I already had 91 degrees on the CoreTemp program. Maybe it's because I currently have an extended monitor on the USB-C port, which of course needs a lot of energy.

You can of course set up the laptop as a test so that it also gets fresh air from below, and if necessary help with a fan from the outside. Nevertheless, the WLAN adapter should also be able to withstand greater heat. If the laptop e.g. Has run at 90 ° C every day for the past two years, but that could definitely be a reason for the failures.

As I said, occasionally breaking the Internet connection is not a sign of drivers or software for me. If possible, operate the laptop in close proximity to the router (maximum 5 m, with no walls in between) to check the signal strength over the long term. Even if the antenna has lost power, the signal should definitely be strong enough. This eliminates a defect in the antenna itself, which in turn would indicate the adapter. Finding the cause of something like this is often more effective than finding out exactly what isn't working. In the case of such failures, a repair is usually not worthwhile. An exchange of the network card (or, depending on the cost, even replacement of the entire computer) might therefore make more sense.

Thank you for your message. I will certainly test the points that you have listed for me. In the worst case, I just have to replace it, which can be expensive. I have to think it over carefully.

I wish you success!