Hi David,
I'm Paul and I'm here to help you with your concern.
- Run Troubleshooter
Open Settings => System => Troubleshoot => Other troubleshooters =>Internet Connection/Network Adapterv=> Run.
- Update or Rollback the WIFI driver in the Device Manager.
Open Device Manager >> click Network Adapters >> right- click your WIFI driver >> click Update Driver.
If the system says that you have the latest driver installed. Try to Roll back the driver. Right-click your WIFI driver >> click Properties >> click Driver tab >> click Roll back driver.
- Uninstall the currently installed WIFI driver then download and install the available driver from the PC manufacturer's website.(You might need to use a different device with an internet connection to download the driver.)
I hope this helps. Feel free to ask back any questions and keep me posted.