Solved 8-yr-old laptop stopped showing display on external monitor

Dell Vostro 1520 laptop computer (intel...
August 23, 2015 at 15:02:16
Specs: Window Vista, 1G
I have Dell Window Vista laptop 8 years old. Last year, its screen turned to black. So I used my laptop by connecting it through DB15 connector to the monitor. Each time, the laptop is turned on, it makes one click sound to the monitor. And the monitor displays the picture video of laptop.
Yesterday, after laptop is turned on, one click to try turning on the monitor then the second click shortly to turn off. So the monitor could not come up a display.

I tried this monitor connecting with my new laptop. It worked fine.

All your suggest would be appreciated.

Best,

Truc C. Nguyen


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✔ Best Answer
September 13, 2015 at 17:04:41
Did you tell the computer to send a video signal to the DB 15 port?
My only experience with a laptop is with one that is even older than
yours: It is a Dell, made in 1997. It has a key on the keyboard marked
"Fn" ("function") in blue, and the F8 key has a blue rectangle which
represents the monitor screen. Holding down the Fn key and hitting
the F8 key switches the video output between the built-in screen, the
external screen, and both screens.

Edit: Oh. I re-read the original post. You evidently know how to
switch the video because it worked for you before! Never mind!

-- Jeff, in Minneapolis

message edited by Jeff Root



#1
August 23, 2015 at 20:15:14
The best thing to do at this point is to probably try another monitor.

Sometimes a monitor will make a clicking sound because a relay changes state when its resolution is changed. So you might try booting to safe mode and see if you get a display then.


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#2
August 30, 2015 at 10:26:34
I tried another monitor had worked with the laptop before. The video did not display on the monitor. Because I could not see the picture from the laptop. How do I know it was in Safe mode? Thanks,

Truc C. Nguyen


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#3
August 30, 2015 at 13:19:13
If it is a resolution problem you should still see the posting or logo screen and be able to get into bios setup as those are low resolution. I believe to get into bios setup on that model you can tap F2 after turning it on.

I think you should also be able to get the F8 windows boot menu as that would be a lower resolution also.

If you still can't get anything on the screen the problem is probably not with the video but some other hardware failure.


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Related Solutions

#4
September 5, 2015 at 05:04:24
I still can not get anything on the screen after trying F2 or F8 after turning on

I do not believe the product of Dell die early)

Truc C. Nguyen


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#5
September 5, 2015 at 23:28:14
Well it's been 8 years. I guess that's not too bad for a laptop.

If you can find a working used one that's exactly the same model, maybe on ebay, you could swap your drive in that one and keep using your software.


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#6
September 13, 2015 at 06:19:18
I brought my Laptop to Computer repair shop

They diagnosed the issue and let me know that LCD Backlight is bad. It needs to be replace, and it would cost $130.00

I gave it up this charge for a old laptop. Instead, I will buy new latop

Truc C. Nguyen


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#7
September 13, 2015 at 08:46:56
I wouldn't expect replacement of a laptop backlight to be cheap,
but $130 seems way out of line. How much is actually typical?

You should be able to buy the part and do it yourself. I've seen
instructions for replacing a backlight on YouTube.

-- Jeff, in Minneapolis


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#8
September 13, 2015 at 10:02:04
Does the issue come beyond Vostro 1520 Laptop LCD screen backlight because the screen does not display on the external monitor through DB 15 port?

Truc C. Nguyen


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#9
September 13, 2015 at 17:04:41
✔ Best Answer
Did you tell the computer to send a video signal to the DB 15 port?
My only experience with a laptop is with one that is even older than
yours: It is a Dell, made in 1997. It has a key on the keyboard marked
"Fn" ("function") in blue, and the F8 key has a blue rectangle which
represents the monitor screen. Holding down the Fn key and hitting
the F8 key switches the video output between the built-in screen, the
external screen, and both screens.

Edit: Oh. I re-read the original post. You evidently know how to
switch the video because it worked for you before! Never mind!

-- Jeff, in Minneapolis

message edited by Jeff Root


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#10
September 13, 2015 at 17:48:13
No, I did not know how to switch the video

My laptop had no display on the screen due to have the bad LCD Backlight

I had problem switching the video output to use the external screen.

You solved my issue.

Thank you so much

Truc C. Nguyen


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#11
September 14, 2015 at 13:59:17
Yay!!

Thanks for letting us know that at least one thing worked.

-- Jeff, in Minneapolis


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#12
September 14, 2015 at 14:06:18
Yeah, I didn't even think of that.

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