Unable to activate and detect wireless on acer laptop

Hi,

Im facing some wireless network problem. Sometimes I can connect without any problem but lately, it hasnt been working

1) Unable to switch on the wireless by pressing the button on the left side of keyboard
2) There should be a 'wireless...' at the network sharing center
3) There should be a 'intel...' driver at device manager

I have attached a picture to better explain what i meant above.

Would appreciate any help!