Question about Lenovo 3000 N500 Notebook

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Broken screen, external monitor via VGA won't

Laptop with broken screen: an external monitor has been connected via VGA port but remains blank (stays in powersave) even with Fn+F7 pressed.

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  • peterwaking Nov 16, 2009

    Multiple Fn+F7 presses tried.
    Initial "splash" and "Windows" screens do not show.
    Monitor works ok with another computer.
    Worked with this one, then stopped, started with Fn+F7, then stopped again and now does not respond to Fn+F7.
    Thanks.

  • peterwaking Nov 16, 2009

    Multiple Fn+F7 presses tried.
    Initial "splash" and "Windows" screens do not show.
    Monitor works ok with another computer.
    Worked with this one, then stopped, started with Fn+F7, then stopped again and now does not respond to Fn+F7.
    Thanks.

    LATEST: it now works again - after closing and opening laptop cover!

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Posted on May 11, 2010

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Press "Fn+F7" once, wait a few seconds, and press it again, to "cycle" through all the possibilities (LCD-only, VGA-only, both).

Try the monitor with some other computer (desktop or laptop) to see if the monitor works at all.

Restart your computer -- does the initial "splash" screen (showing CPU speed and RAM-test) show? Does the "Windows" screen (with the crawling worm) show on the external monitor?

Posted on Nov 16, 2009

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How about looking at a screen?

Use an external monitor

Briefly;

Your laptop has an external display device port. (Connector)
I do not know what it is, because you didn't state the laptop manufacturer name, and model number; Elizabeth

It may be a VGA port, or HDMI port, or Mini-HDMI port; or DVI port

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

(Scroll down for VGA Cable example)

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

(You can click on any photo, and it will enlarge)

http://en.wikipedia.org/wiki/File:HDMI_Connector.jpg

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

Laptop OFF, monitor OFF, connect the external display device to the laptop.
(VGA = Monitor. DVI = Monitor. HDMI, and Mini-HDMI usually = HDTV. They all compromise an external display device)

Turn the monitor/HDTV on.
Turn the laptop on.
By factory default settings, the display should show on the external display device.
IF not;

There are at least 3 display options. For this example I'm going to use a VGA monitor.
(For a VGA monitor you can use a CRT type of monitor. Looks like a small TV. Or you can use a flat LCD screen monitor, if it has a VGA Cable attached)

The basic 3 display options using a VGA monitor are;
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 Display Toggle-Over key.

Which key is that? Dunno. Laptop manufacturer name, and ......................

It will be one of the F keys at the top. F1 through F12.
The Function key will have a monitor icon on it, and usually an arrow on one side........Or perhaps two monitor icons sitting side by side.
(Empty rectangle is a monitor icon)

Still no display on external display device?
Hold the Fn key down again, and tap once more on the Display Toggle-Over key

[If memory serves for Display Toggle-Over key;
HP = F4
Acer = F5
Toshiba = F5
IBM/Lenovo = F8

Don't write that in stone, however.......]

Once you post the manufacturer name, and model number; then I can guide you step by step.

Post back in a Comment.

Regards,
joecoolvette

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My toshiba l675d-s7013 laptop screen won't come on?


hi


turn off your laptop take out the battery and hold the power button for 20-60 secs to discharge it and then put the battery back in and reboot or remove the battery and the ram clean the ram or try another stick of ram then press the power button and see if that restores your laptop.


if not plug another monitor into the external vga port, if the external monitor works then your laptop screen is faulty.



if the external monitor is also black or blank then the inverter inside the laptop needs to be checked or replaced.


cheers

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Problem with;

1) Video cable:

A) Video cable connection on motherboard side is loose, and/or on back of LCD screen.

B) Video cable is damaged.

2) screen Inverter:

screen Inverter is bad.

3) LCD screen:

LCD screen is bad.

4) Graphics chipset:

Graphics chipset is bad.

Suggest you connect a VGA monitor to the VGA port (Connector) on your laptop.
See if the problem is the graphics chipset, Or video cable, Or display assembly.

You didn't state what manufacturer and Model Number of laptop this is.
All I can do is state generic information.

This is an example of a VGA Cable, and VGA connector,

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

The VGA connector will be on the side, or back of your laptop.
For the VGA monitor you can use a CRT type monitor, (Looks like a small TV), or a flat LCD screen monitor that has a VGA cable.

Laptop OFF, monitor OFF, connect the external VGA monitor to the laptop.
Turn the monitor on. If a CRT type allow it to warm up.

Turn the laptop on.
By default the display should show on the external VGA monitor.
IF not;

There are at least 3 display options.
1) Laptop internal monitor ONLY
2) Laptop internal monitor AND external VGA monitor
3) External VGA monitor ONLY

Press, and hold down on the Fn key, and at the same time tap once on the Display Toggle-Over key.
(For an example HP's usually use the F4 key for a Display Toggle-Over key)

Display shows the same on the external VGA monitor?
You have a bad graphics chipset.

[ Some laptops have been erroneously stated as having a graphics card, when in fact they do not.
The GPU (Graphics Processing Unit) is soldered directly to the motherboard.
This is Integrated Graphics.

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

There is no changeable, replaceable graphics card. Therefore the solution is motherboard replacement ]

IF, the display is good on the external monitor, you have a problem with the Video Cable, and/or in the Display Assembly.

After diagnosing with an external VGA monitor, post back in a Comment.
Also post the manufacturer name, and model number of the laptop.

Regards,
joecoolvette

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It ISN'T the LCD screen. Since you diagnosed with an external VGA monitor, you now know the problem is the laptop.

(When you connect an external VGA monitor to a laptop, you are bypassing the Video Cable, and LCD screen. You are connected directly to the laptop )

The basic Windows files aren't being found. The boot files. This may mean a bad Harddrive.

Do you have the Restoration CD Disk? Laptop on insert it into the optical drive tray, close the tray.
When asked choose - Repair. (Non-Destructive Installation)

If a checkdisk is done, you have bad sectors on the harddrive.
There IS a special procedure in replacing a harddrive.

[ More information on Harddrives,

http://computer.howstuffworks.com/hard-disk.htm ]

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Then look at your keyboard and look an icon in your function keys (F1 to F12) that looks like a pair of an LCD and a TV like this {LCD icon/ TV icon}. In most laptop keyboards, this is located in F4.

When found, and with the external monitor hooked to the laptop via VGA port using a VGA cable, press and hold down the FN key and press the function key where the icons described above is located. Example, FN + F4 to toggle a single and a dual monitor.

Give it a try.

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