WLAN driver issue? Some generations of WiFi NICs had problems with power saving features dropping the connections, so maybe changing the adapter power settings might help?
I have an Alienware laptop that's a year old and has problems with the WLAN after repeatedly going to sleep and waking up again. I resolved some of that by changing the power setting to disable the Windows 10 'fast startup' feature to get a clean start every time, but I still have issues. Similar issue were network icon shows no networking, but the preferred connections are available and I can manually reconnect. I will never again buy any device with a 'Killer' network device. Should have stuck with Intel.
You may be able to search for the specific models for the laptop and WLAN adapter and your symptoms. I wouldn't be surprised if others are having similar issues and maybe somebody figured it out.
No Windows 7 support after 1-14-2020, so consider that in how you approach a resolution.