Backlight screen not working.. tried another screen also not working

[chikoo711]

Sony vaio laptop sceen is working ok but without backlight I tried another screen on my latop its backlight also didn't work. I tried my laptop screen on another laptop the backlight works ok, so the screen inverter and backlight are ok but they are not working on my laptop ??

 

[Hamperking68]

Are you running windows 10?