MSI CR41 User Manual page 38

Getting Started
+
WLAN
(WiFi)
+
Bluetooth
(Optional)
3-14
Press and hold the Fn button, and then press the F8 button
repeatedly to turn the Wireless LAN (WiFi) function on or
off recurrently.
Press and hold the Fn button, and then press the F9 button
to turn the Bluetooth function on. Press again to turn it off.
This function button will not be available when the
Bluetooth function is not supported.