There is no display when I turn on my laptop?

Laptop screen won't turn on, but works with external monitor ...

www.tomsguide.com/.../laptop-screen-turn-works-external-monitor.html

Oct 16, 2015 - Hello, my laptop screen won't display anything. It boots up and ... External Monitor; Function Keys; Laptop Screen; Windows 8; Asus. Display.

ASUS laptop screen won't display anything - Tom's Guide

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Aug 28, 2013 - My laptop screen won't display anything Forum; Asus n56vz laptopwont ... i cant remove the asus battery to my laptop and the screen wont turn ...

Asus laptop black screen problem - YouTube

? 7:52
https://www.youtube.com/watch?v=gRQgN5AT3a0
Aug 2, 2011 - Uploaded by mrwangyanfei
Black screen when switch on Asus laptop (N61J) ... I turn on mypc and the screen stays black. I tried ...

The laptop can be in the external monitor mode or the white lite for the laptop screen is bad.

Have you tried running off the mains? Try seeing if you have turned down the 'Brightness' control to 0!

A) Post THE Product Number on the bottom of the laptop. It's in the white Service Tag. P/N = Product Number.

B) On the left/bottom side of the LCD screen frame (Display Bezel), there is a switch. Looks like a small button.

This is the Internal Display Switch. (May not be in this exact position for your model. Look around on the Display Bezel, that surrounds the LCD screen)

When the laptop is closed, the switch turns off the display, (Image on screen), with the computer still on.
Tap it a couple of times lightly, with the eraser on the end of a number 2 pencil.

See if anything happens. That switch may be bad.

C) Laptop off, monitor off, connect a VGA monitor to the VGA port on the laptop.

Example of a VGA cable, and VGA connector, (Port),

http://en.wikipedia.org/wiki/VGA_connector

You can use a CRT monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

C) Turn the monitor on. If a CRT type of monitor allow it to warm up.
Turn the laptop on.

By factory default settings, the display should show on the external VGA monitor.

IF not;
There are at least 3 display options,

1) Internal monitor of laptop ONLY
2) Internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key. At the same time tap once on the Display Toggle-Over key.

Don't know what exact HP laptop you have. For most HP's it is the F2 key, or the F4 key, that is the Display Toggle-Over key.
(Key has an empty rectangle on it, with a vertical line on each side)

Still no display on the external VGA monitor?
Hold the Fn key down again. (Bottom left of Keyboard)
Tap once more on the Display Toggle-Over key

NO display on the external VGA monitor, means you have a bad graphics chipset.

(By using an external VGA monitor, you are bypassing the Internal Display Switch, and the Display Assembly. (Internal monitor of laptop)

If you have a display on the external VGA monitor, you have a problem with;

1) Video Cable, (Display Panel Cable for HP)
or
2) Display Assembly

Post back with your results, and if you have a display on the external VGA monitor, we will go on.

If you do not have a display on the external VGA monitor, you are looking at motherboard replacement.

Post back in a Comment.

Regards,
joecoolvette

Press Fn+F7 to switch displays You can do it 2 times to see if it activates.
Use Fn+F5 to activate to see if u need to turn the brightness up. Then Right key.
if that didnt work turn your computer off and disconnect every thing turn it back on and tap your F8 to get in safe mode.
You can go here to see if you need updates...which maybe u already have done.

I think that the first thing you should check is the display itself. Connect the laptop to an external monitor to see if you get video output.
Also, be sure you haven't accidentally turned the video off using the Fn plus special function key combo that switches displays between the laptop and external.

My Laptop HP Pavillion TX2500 incorrect color display during bios and startup but when the laptop is hot it displays the correct colors.But if cold displays incorrect colors. what can I do?

When you say that the laptop turns on do you hear the windows login sound? If yes there should be some hardware problem with the laptop. Get in touch with DELL if the laptop is under warranty then they would be replacing the display.

If the laptop gets turn on and if you are able to hear the windows start up tone then the display drivers may be corrupted. So connect the laptop to external monitor. If the display comes on the external monitor then you can perform the system restore.
It will get your display back to normal.

Please get back so I can provide you more steps to get the display back.

in stead of alt crtl del try pressing F8 key on keyboard after you turn it on, it will display a few options. go from thee.

in case it does not stars, you may have a faulty memory ram. it needs to be replaced