My laptop screen is blank but when I plug it on to the Tv it working

[Carissa_1]

Need help pls

 

[GreyCatz]

Try this:
Plug your laptop to the TV and open the Settings app in Windows. Click System in the upper left corner and scroll down to 'Multiple displays'. Select Duplicate these displays. My guess is that someone has selected Show only on 2 (which would be the TV) leaving the laptop (Display 1) inactive.