I have lenovo g430 4152 laptop how can i find my wifi and bluetooth fn key

Most laptops use a key combination for these kinds of tasks. Things like volume, wifi access, or screen brightness can be modified usually by holding a function key. This key is usually marked with "Fn" and you hold it down while pressing on of the F keys at the top of the keyboard (F1, F2, etc til F12.) to perform the task. Now, some computers have a "function lock" ability. Which basically means you do not have to hold that Fn key to do tasks. Could be that has been enabled. If you provide the laptop make and model we can look into it. =)

You may have to reinstall the wireless/bluetooth drivers from Lenovo.

hold fn key and then touch wifi key at the same time.should turn on.first of all check drivers are installed.if still no joy.wifi card could be faulty

To turn off/on the airplane mode or to switch on/off the wireless systems (WiFi/Bluetooth) in the laptop try pressing the Fn+F5 key combination repeatedly till you turn on or turn off the required device.

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Try to press Fn key + Esc key to enable the camera. Press Fn key + F5 key to enable bluetooth.

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1. There is a switch on the front left hand side of the laptop, just shift that to the right and will turn the wireless adapter on.
2. There is also a shortcut you can use, hold FN button and press F5. This will bring up the wireless/bluetooth menu, and you can turn it off/on from here as well.

go to start>run>msconfig
select start-up tab
tick the blutooth
apply ok
restart

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go to the lenovo site and search the model of your lenovo and download the bluetooth driver.. your bluetooth driver might not installed on the laptop..