When I click the Networks logo below my laptop, it only shows connections but Wi-fi is gone.

[AlvinYusr_16]

Hello everybody. I have a problem with my laptop. Usually when I clicked Networks logo below my laptop there is "Connections" "Wi-fi" letters, but when i click it now, only Connections shown,

i remember a weird thing i have done to my laptop is force stopping to scvhost.exe because sometime it takes 90% of my ram, i don't know why this is happen and it is annoying, so when i force closed at it, then the wi-fi letter on my Networks logo is done,

what should i do with that?

 

[wah007]

What is the laptop make and model?

 

[AlvinYusr_16]

What is the laptop make and model?

it is Toshiba and windows 8