I have a dell japtop the screen is blank what do I do write back .

First its not a good idea to piggyback your question on someone else's. This can lead to confusion. You should start a new thread. So I've moved your question to its own thread.

How old is the laptop? Have you contacted Dell support?

i have a dell japtop the screen is blank wat do i do write back .
Try to used the external monitor, if it displays then there something wrong with
The LCD.

With a BRIGHT light on the screen see if you can see an image. If you can, it's the backlight.