I have problem of a vertical line on my LG 17 inches wide screen TFT.What is the solution?

Line fault. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

well if you could please give out the model nuumber thank you

It is damaged and need to be replaced. NO option to repair. Sorry.

Here is the answer to that:

http://blog.coppelltvrepair.com/2010/10/vertical-or-horizontal-color-lines-in.html

I think the problem is going to be in the Windows software, and not the settings on the monitor. Not sure which type of computer or which Windows you're running, but get into control panel, monitor settings and see what you can do. Windows help and support might be able to assist you.
Here's an excerpt from ncix.com:
Cons Clumsy front panel controls
Vertically, picture is no larger than my old 17"
May require video card upgrade for higher resolutions
Front panel illuminated power button is distracting
Summary Overall, I really like this monitor. But don't expect a size increase vertically over a 17" display. I actually lost half an inch. I prefer a 16:10 aspect ratio so I'm not actually using the full wide available. If you're like me you can save some change and go for the 2243.
Cons Clumsy front panel controls
Vertically, picture is no larger than my old 17"
May require video card upgrade for higher resolutions
Front panel illuminated power button is distracting


Cons Clumsy front panel controls
Vertically, picture is no larger than my old 17"
May require video card upgrade for higher resolutions
Front panel illuminated power button is distracting
Summary Overall, I really like this monitor. But don't expect a size increase vertically over a 17" display. I actually lost half an inch. I prefer a 16:10 aspect ratio so I'm not actually using the full wide available. If you're like me you can save some change and go for the 2243.

Not sure if that will help, but there it is.
Here is the whole blog:
http://ncix.com/products/index.php?mode=productreviewread&product_id=37490
Not sure if this will help, but you might check it out:
http://www.sevenforums.com/graphic-cards/19981-cannot-display-1920-x-1080-a-2.html
Good luck, and hope this helps.

Yes, but the cost is not worth it. If you get it apart you will no doubt find a couple of bulging capacitors. Dell site has the disassembly instructions.

Hello Depending how wide the line is their could be two possible causes.
I have two questions for you.
1. How wide is the line.
2. Does it run from top of screen to bottom of screen?
If the line is thin a single strait line then it is possible the PDP has gone Bad (Panel). (Screen). The screen will to be replaced.
If the line is at least 2 or more inches wide then its a buffer board which can be replaced. LG calls this board Hand insert Boards or display driver boards..

Hi...there,
It's seems you got a busted screen panel...

i experienced a tainted vertical black lines on the boths sides of my lcd screen. There was no scratch or whatsoever that could be the reason why thsi balck colored vertical lines to spread. Hope you can help me solve this problem. Thank you..

control board