Asus laptop no screen display

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 ...

http://www.asus.com/Notebooks_Ultrabooks/X58L/#support_Knowledge

Don't know why I did that.

Asus Support. Those two words don't even belong in the same sentence. (Neither does Toshiba Support, or Acer Support)

Notice the large statement?

NEED SERVICE?

(In otherwords GOT MONEY?)

Rant over.

Janet,

The problem will be;
1) Graphics chipset
or,
2) Video Cable,
or,
3) screen Inverter,
or,
4) LCD screen

I'm betting it's the economical, and easy to replace - screen Inverter.

Laptop on, shine a bright flashlight at the LCD screen of the laptop; and shine at various angles.

See faint images?
Backlight is out, or screen Inverter is out.
90 percent of the time the fault is the screen Inverter.

Moving on........

A) Graphics chipset:
Laptop OFF, monitor OFF, connect a VGA monitor to the laptop.
The VGA port is on the Back of the laptop.

This is a General example of a VGA port (Connector), and VGA Cable,

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

Scroll down a little for VGA Cable example.
You can use a CRT type of monitor, (Looks like a small TV), or a flat LCD screen monitor if it has a VGA cable.

Turn the monitor on. If a CRT type 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 available;

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

Hold the Fn key down, and at the SAME time; tap once on the F8 key.
The F8 key is the Display Toggle-Over key.

(User Manual indicates not all laptops, may use the same Function keys.
Whatever Asus.
The Display Toggle-Over key has LCD on it, surrounded by a rectangular line. Has a small monitor icon to the right of it )

Display on external VGA monitor? No?
Hold the Fn key down again, and tap once more on the F8 key.

No display on external VGA monitor, indicates a problem with the graphics chipset.

Display ON external monitor, indicates a problem with the;
1) Video Cable,
or
2) screen Inverter,
or
3) LCD screen

Perform the 'flashlight test'. No faint images go on to the external VGA monitor test.

Post back in a Comment.
We'll go from there.

Regards,
joecoolvette

(There are NO service manuals available, to the public.
Thank Asus for that. To procede though can be done.

This will require a partial disassembly of the laptop, to include removing the Keyboard, and Palm Rest Cover.

Together we can accomplish this if needed.

May do something I never do, and that is because of no Service Manual available. May ask you to buy a replacement screen Inverter, and replace it.
Need other information above FIRST.

Average cost is around $25 to $30.
The plastic frame in front of the LCD screen is the Display Bezel.

The screen Inverter is located behind the Display Bezel, and mounted to the bottom of the LCD screen assembly.

(Clip or a Philips head screw)

Average example,

http://www.ebay.com/itm/100-Genuine-NEW-Original-Asus-X58L-laptop-Series-LCD-Inverter-08G21VJ10107-/290873311574?pt=LH_DefaultDomain_0&hash=item43b9668156

Doesn't require removing Keyboard, and Palm Rest Cover.
DOES require removing all power. AC adapter (Charger), and Battery.

Virtually all IBM and Lenovo ThinkPad and ThinkCenter laptops allow you to hook up an additional monitor or projector to the computer. When you add an external monitor or projector to your notebook, you can choose to view the display on the computer, on the external device, or on both the laptop and the external monitor or projector at the same time. Toggling between viewing devices is as simple as pressing a couple of keys on the keyboard.

Shut down the laptop. Plug the VGA monitor cable from the external monitor or projector into the blue VGA port on the back of the computer. Turn on the external monitor or projector first, and then the Lenovo laptop. Allow the notebook to boot into Windows normally. Press the "Fn" and "F7" keys at the same time to switch the display from the laptop to the external monitor or projector. Press the "Fn" and "F7" keys again to enable the display on both the laptop and the external display device. Press the "Fn" and "F7" keys again to display screen contents only on the laptop LCD. choose support you need http://www-307.ibm.com/pc/support/site.wss/MIGR-54305.html http://www-307.ibm.com/pc/support/site.wss/MIGR-4YQHUC.html enable tv out on thinkpad http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-58625

set it to clone. it should give you identical displays. then try setting it to extended display. But make sure that your laptop display is primary display. That is why your external screen is displaying because it set on primary.

Fn+F7 Toggles the display between the computer screen (LCD), a connected external display, and both the LCD and an
external display.
Select one display when playing a DVD. Connect the cable(s) before you turn on the computer; otherwise, Fn+F7 will not
work. You cannot use the Fn+F7 function to switch between the LCD and an external display once a DVD is inserted into
the optical drive.

Below is the link to the user manual for your notebook.....

http://www.docs.sony.com/release/PCGGRT250.pdf

Hi. I think the LCD screen of your laptop needs a replacement because I think the backlight on that LCD is already busted thats why you need to point a flashlight or some sort of light just to see the display. Powerdraining your computer wont work because this already a hardware issue with the LCD, that's why when you switch display with your monitor it works fine. I would suggest replacing the LCD of that laptop or try calling Lenovo tech support if your laptop still under warranty so that they would replace it for free. This is no. to contact for your Lenovo laptop US/Canada 1-800-426-7378, Australia 1-300-880-917. Hope this Helps

How to use the function (Fn) keys on the keyboard - ThinkPad T40, T40p, T41, T41p, T42, T42p, T43, T43p


Switching the display output location.
Switch between the computer display and an external monitor. If an external monitor is attached, the computer output is displayed in the following three patterns by turns:

• External monitor (CRT display)
• Computer display and external monitor (LCD + CRT display)
• Computer display (LCD)

Notes:

• For any operating system other than Windows 2000 or Windows XP, no additional procedure is needed. Just press Fn+F7.
• This function is not supported if different desktop images are displayed on the computer display and the external monitor (the Extend desktop function).
• This function does not work while a DVD movie or a video clip is playing.

To enable this function in Windows 2000 and Windows XP, the following procedure is needed:

1. When you log on to Windows 2000 and Windows XP for the first time, press Fn + F7 and select a display-switching function in the Initial setup window. Since in Windows 2000 and Windows XP multiple users can log on to a single operating system by using different user IDs, each user needs to select the function in the initial setup window when logging on for the first time.
2. If the Fn + F7 key combination have been assigned to a presentation scheme function, start Presentation Director, and change the settings.

Your LCD screen has back-light problem. It is caused by a faulty inverter or a faulty CCFL lamp. Please click on this link and follow my instruction for a possible solution :-
http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen

HI friend

If you have External Monitor check by connecting it
if you get display on external monitor without line it means Display screen is Bad, if Line appears on external display as well then there is Motherboard problem Please contact Your nearest service centre for Service.

It is possible that you switched off the internal video display, enabling the external adapter. If this is the case, you should be able to plug in an external monitor, get your display back, and change monitors back to the internal one via software (display properties).