What is wrong with my Toshiba Satellite laptop screen

November 28, 2016 at 13:47:10
Specs: Linux
I have a thin green line going right across my toshiba satellite laptop screen. Is there anything I can do with the settings to see if it goes it doesn't show up on external monitor and I haven't banged it.

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#1
November 28, 2016 at 13:55:36
Is that all there is on laptop screen? Any other image/display content? Does the external display what the laptop displays without the green line as well?

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#2
November 29, 2016 at 03:59:40
Picture and colour is perfect there is no distortion and when I connect to my tv the line doesn't show up. Its just 1 thin green line. I'm kinda New to computers and just at a loss at what to do. Thanks for replying. Lisa

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#3
November 29, 2016 at 04:43:11
Is this a new Laptop?
If so, maybe there is foil on the screen, which can be pulled off.

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#4
November 29, 2016 at 05:00:20
No it's not new it's a Toshiba satellite C50 updated to Windows10 there's nothing on the screen no foil etc

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#5
November 29, 2016 at 05:49:29
Just to clarify:

The laptop has nothing showing on the screen - other than the thin green line?

Or is the green line superimposed over an otherwise "normal" laptop display?

There are several versions of the c50 - which one do you have?

What OS was installed previously?

Was the laptop display screen OK before the win-10 upgrade?

Did the problem appear as a result of that upgrade (immediately); or has it appeared some time later?


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#6
November 29, 2016 at 10:56:36
Lisa made clear in reply #2 that the image on the screen is
completely normal except for the horizontal green line.

My ancient laptop screen has had a similar vertical line for
many years. It isn't visible when the laptop is first powered
on, and the screen is black. A minute later, with a background
image on the screen, the line appears yellow. The blue pixels
in that column are dark, so the adjacent normal red and green
pixels make a yellow line. After another minute or two the line
gradually becomes blue, with all the blue pixels in that column
fully lit up even if they should not be. After another couple of
minutes the blue pixels gradually go black again, resulting in
a yellow line when that part of the screen should be white or
gray, or a black line when that part of the screen should be
blue. The line isn't visible when there is no blue in that part
of the background image, because only the blue pixels are
affected.

On your computer, the green pixels are most likely turned on
when they should not be. That is the case if the line is bright
green against a dark or black background. If the line is green
against a white or light gray background, then the problem is
that both the red and blue pixels are dark, leaving just the
normal green pixels visible.

The vertical line on my screen does not extend all the way to
the bottom. Instead it stops about 30 pixels above the bottom.
I have no idea what is causing it, except that it is obviously a
hardware problem, and it isn't the pixels themselves, but the
signal being fed to them. I'm curious how only a vertical line
of pixels on my computer and only a horizontal line on yours
can be getting a bad signal -- especially a signal which turns
the pixels on to full brightness at least part of the time.

-- Jeff, in Minneapolis

message edited by Jeff Root


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#7
November 29, 2016 at 12:40:33
I didn't read it quite that way; possibly due to lack of a comma or more to separate info...

However based on the presumption that the screen is OK otherwise, then it does look like "either" a glitch/problem with laptop screen itself; "or" possibly an issue with the display adapter - one output in particular? Less likely is a ribbon cable fault; although I have seen similar effects when there was an issue with SCART cable (used mostly in the UK to connect set top boxes, DVD recorder/players, vhs etc. to tv sets).

My money at his time might be on the display adapter itself - "if" the problem has appeared some time after the upgrade to win-10. "If" it appeared as/when win-10 was installed, thenI might be looking at a driver issue...


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#8
November 29, 2016 at 14:19:37
The screen itself is perfect. I can only see this green line when the background is black or dark colours When the background is white I can't see it. The Windows10 upgrade was done about 6 months ago and has been running ok. I just put it on one day and there was this green line running right across the screen. Its very thin about the width of a peice of cotton. The laptop is a Toshiba satellite C50 A 1JM. It was originally Windows 8. I really appreciate any help and a big Thankyou to those who have taken the time to give me their advice. I'm just up the wall and very saddened that it has happened.😕

message edited by Lisaxwx


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#9
November 29, 2016 at 14:27:38
Reading your reply about the green pixels being on when they shouldn't be. If that was the case how would I go about correcting this ? I can only see this green line when the background image is black or dark. The line is not visible when the screen is white.

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#10
November 29, 2016 at 15:28:58
This sound like a screen ribbon / LVDS fault . Often these lines occur because the the connection between the ribbon connection and the LCD is compromised - This happens usually from heat or damage and is common in laptops when they are dropped

This can either be fixed by replacing the screen or applying pressure to the ribbon connection to the LCD

see here for example
https://www.youtube.com/watch?v=67l...

message edited by 90Ninety


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#11
November 29, 2016 at 19:48:05
Yeah, likely a hardware fault but just in case, did this start as soon as you upgraded to windows 10? If so you may want to check the toshiba support page for that model for updated windows 10 video drivers.

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#12
November 29, 2016 at 20:33:05
Does seem to suggest either a ribbon cable or its connector(s) rather than a driver issue, since all was well for some time after the win-10 upgrade. Equally it " mght be the display itself.

I would nonetheless check at the Toshiba site for any display driver updatrs. Do NOT go to one of the many driver update sites (i.e. those not actually Toshiba itself). Those "other sites" often aren't quite all they appear to be.


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#13
November 29, 2016 at 21:03:30
If you go into BIOS set up and the line appears then it is hardware (cable or monitor) but if the line does not appear in BIOS set up it is more likely the driver is corrupted.
Safe Mode also may tell you the same thing since it uses basic only drivers.

You have to be a little bit crazy to keep you from going insane.


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#14
November 29, 2016 at 23:57:16
Yeah this laptop is making me feel like I'm going crazy. Its working ok otherwise. Its just that my eyes keep getting drawn to the green line and I just want it fixed. I don't have the funds to get a new one so I was hoping there was something I could do to fix it. I was watching a film from my laptop to my tv last night and the images going to the tv was perfect no line was visible. 😕

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#15
November 30, 2016 at 20:45:14
Try #13, either will indicate if you may need to get the laptop opened to check the monitor cable or possibly the monitor OR if it will require deleting the video drivers in Safe Mode and downloading a new set from the Mfg's site.

You have to be a little bit crazy to keep you from going insane.


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#16
December 1, 2016 at 03:56:24
I'm new to computers but will try that thanks.

message edited by Lisaxwx


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#17
December 1, 2016 at 04:32:05
When you boot up the laptop, watch for a brief message on the screen telling you what key(s) to press to enter bios (often near the left side of the screen). Do so - but don't actually change anything in there...

In fact when you view that brief message... if the green line is there then there it does suggest a problem with either the display itself, or the connections between it and the motherboard. If the screen even for that brief display message is clear (no green line) then unlikely it's either of the above.

When you enter bios - there is (usually top right corner - but not always) and indication of how to leave (exit) without changing anything. Logically that is what you do...


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