Fn keys for touchpad in hp laptop

[ninja322004]

Hello,
I have HP laptop and its touch pad is not working. There is no button for lock above my touchpad. Can you help me out please?

 

[Collie147]

what model laptop?

 

[Collie147]

try FN + F12 if that doesnt work try http://en.kioskea.net/faq/1902-disable-enable-the-touchpad