Hello,
Thank you for posting your concern in Microsoft Community and welcome to the Windows 10 Family.
From the description provided, I understand that Windows is unable to recognize the wireless network.
to be able to assist you better, provide us few more details on the below questions.
1. Is the router you are referring to is a wireless?
2. Do you use WEP encryption?
Please follow the below suggested methods and check if it helps to resolve the issue.
Method 1
Follow these steps to run the windows in built troubleshooter:
a) Write Troubleshooting in the search box and hit enter.
b) Click on Troubleshooting
tab.
c) Click on view all option on the upper left corner.
d) Select the Network Adapter
option from the list.
e) Click Next to run the Troubleshooter.
Method 2
When connecting to a broadcasting network, much of the network configuration is done for you automatically. All you have to do is enter a password. When connecting to a hidden network you'll need to gather all of the information and enter it in manually.
Please follow the below steps.
-
Open Network and Sharing Center.
-
Click on "Set up a new connection or network".
-
Select "Manually connect to a wireless network" and click on
"Next."
-
Enter the security information for your network in the spaces provided, as follows:
- Enter the SSID in the network name field.
- In the security type field choose the type of security used by the wireless network you want to connect to. Some routers may name this
authentication method. Depending on the security type you choose, Windows may or may not ask you to select the encryption type.
- In the security key field, enter the password used by the wireless network.
- If you don't want others to see the password you type, check the box that says
"Hide characters".
- In order to connect to this network automatically, you should check the box that says
"Start this connection automatically".
- You should also check the box that says "Connect even if the network is not broadcasting".
Method 3
Download and install any pending Windows Updates and also refer to the below Microsoft Help Article written by one of our MVPs,
Andre Da Costa, on Install and Update drivers in Windows 10.
http://answers.microsoft.com/en-us/insider/wiki/insider_wintp-insider_devices/how-to-install-and-update-drivers-in-windows-10/a97bbbd1-9973-4d66-9a5b-291300006293
Additionally, I would also suggest you to refer to the below helpful links for more information.
Why isn't Windows finding my Bluetooth or other wireless device?
http://windows.microsoft.com/en-IN/windows-8/why-isnt-windows-finding-device
Manage wireless network profiles
http://windows.microsoft.com/en-in/windows-8/manage-wireless-network-profiles
Note: Links relevant to windows 8.1 also applies to Windows 10.
Hope the above information was helpful. If you need further assistance, please do let us know and we would be happy to help you further.
Thank You.