laptop screen led up on pressing power button but cant see my desktop, works fine with tv monitor

[sanju321]

laptop screen led up on pressing power button but cant see my desktop, works fine with tv monitor

 

[n9neman]

If it is working fine on another display, then that tells me that it has something to do with the laptop screen itself. It could be the backlight that has gone bad.

 

[Snipergod87]

Or the data cable for the video signal to the laptops screen came loose.

 

[sondresaetre]

Most likely that the monitor cable is loose or broken.