• Enable the wireless LAN adapter.1. Click the Start button to open the Start menu.2. Depending on your Windows version, do one of the following:– For Windows 7: Click Control Panel.– For Windows 10: Click Windows System ➙ Control Panel.3. View Control Panel by Large icons or Small icons, and then click Network and Sharing Center ➙Change adapter settings.4. Right-click the wireless LAN adapter icon and click Enable.• Update or reinstall the wireless LAN driver. See “Keeping your computer current” on page 58.Bluetooth problemsNote: The Bluetooth feature is available only on some models.The Bluetooth feature does not work.Solutions:• Enable the Bluetooth feature in the Setup Utility program. Refer to “Using the Setup Utility program” onpage 67.• Enable the Bluetooth devices. Depending on your Windows version, do one of the following:– For Windows 7:1. Click the Start button to open the Start menu. Right-click Computer, and then click Properties.2. Click Device Manager. Type the administrator password or provide confirmation if prompted.3. Expand Bluetooth Radios to display the Bluetooth devices. Then, right-click each Bluetoothdevice and then Click Enable.4. Expand Network adapters. Then, right-click each Bluetooth device and then Click Enable.– For Windows 10:1. Right-click the Start button to open the Start context menu.2. Click Device Manager. Type the administrator password or provide confirmation if prompted.3. Expand Bluetooth to display the Bluetooth devices. Then, right-click each Bluetooth device andthen Click Enable device.4. Expand Network adapters. Then, right-click each Bluetooth device and then Click Enable device.• Turn on the Bluetooth radio on Windows 10. Do the following:1. Click the Start button to open the Start menu.2. Click Settings ➙ Devices ➙ Bluetooth & other devices.3. Turn on the Bluetooth switch to enable the Bluetooth feature.• Update or reinstall the Bluetooth driver. See “Keeping your computer current” on page 58.No sound comes from the Bluetooth headset or headphones.Solution:Set the Bluetooth headset or headphones as the default device.1. Exit the application that uses the sound device (for example, Windows Media Player).2. Right-click the volume icon in the Windows notification area on the taskbar.86 P720 Hardware Maintenance Manual