Your wireless signal strength and reliability is only as good as your wireless network adaptor. If you can't connect to your wireless Internet service, or if you encounter a slow connection speed, reset the device. You can reset your wireless network adaptor through your Windows Control Panel to fix any connection issues are you experiencing.
Click the "Start" button on your task bar.
Open the "Control Panel" by clicking on it.
Type "adapter" in the search box at the top of the Control Panel window.
Click "View Network Connections" under the Network and Sharing Center section heading. A new window will appear.
Right-click your wireless adaptor icon, then select "Disable" from the list that appears.
Right-click the adaptor icon. Select "Enable."