As we understand, you are having issues enabling WiFi connectivity in your PC. I would like to mention that the behavior you describe may have different origins (OS, PC hardware, Virus, etc), so we will focus on the options related to Wireless adapter.
- Make sure you have any applicable updates for Microsoft Windows® 10.
- Try doing a clean Install of your Wireless Adapter drivers, please note that the Intel® Centrino® Advanced-N 6250 does not have Windows® 10 drivers, so you have to use the ones for Windows® 8.1 :
1. Obtain the WiFi drivers from: Download Intel® PROSet/Wireless Software for Windows 8.1*.
2. Go to Control Panel - Programs and Features and Uninstall "Intel® PROSet/Wireless Software", if it is installed. When prompted, choose the option to "Discard settings".
3. In Control Panel - Device Manager - Network Adapters, right click on the Intel® Centrino® Advanced-N 6250 and Uninstall it. Make sure you mark the option to "Delete the driver software for this device".
4. Reboot the PC or scan for hardware changes, check device manager again and if an older driver is detected and installed, repeat the actions to uninstall and delete it as well. Repeat this process until the OS does not allow deleting the driver, or until the controller shows as Unknown Device.
5. Install the Intel® Wireless driver. During the first steps of PROSet/Wireless installation, you can customize the installation and install all driver components.
- If the issue persists, try Uninstalling your Antivirus Software and check if this helps.