Block on left side of screen 1 inch from left side from top to bottom

Opening Your Document
Open your Microsoft Word document by double-clicking the Word icon on your desktop. If you do not see the icon on your desktop, then you can locate it where it is buried on your "Start" menu. Click "Start," followed by "All Programs." Then click "Microsoft Office," followed by "Microsoft Office Word." A new document will open on your screen. Click the "Office Button," followed by "Open." Scroll through the files listed, and double-click the one you would like to print. It will open on your screen.

Check Your Margins
By default, your page margins are set to 1-inch margins on the top, bottom, right and left of your page. You can check your margins or change them by clicking "Page Layout," followed by the "Margins" button.

Select New Margins
Select a different margin size, such as "Narrow," which indicate 1/2-inch margins, or "Wide," which indicate one-inch margins on the top and bottom and two-inch margins on the left and right. You also can select "Moderate," which indicate one-inch margins on the top and bottom and 3/4-inch margins on the left and right. Finally, you can select "Mirrored," which indicates one-inch margins for the top, bottom and outside. The inside margins are set at 1 1/4 inches.

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is there a magnet in close proximity to your tv, perhaps an unshielded speaker?

settings is in the lower right hand side of the screen, tap there.
display is in the middle of the screen on the left hand side about one(1) inch down from the top of the screen.
the slider for brightness is down one and one-forth inches down from the top of the screen, tap about 1 inch from the left hand side of the screen, remember it is 1 1/4 inches down the screen.
NCMB

I really do not know there is the "Stuck Pixel Fixer programs" I think that Program Breakdown another IC. For this issue is absolutely the Plasma display panel have problem. You shall exchange it.

Just press the button named 'AUTO' on your monitor front panel. The screen will be automatically adjusted

Definately a damaged screen, no way to fix it for less than the cost of a replacement screen sorry.

the screen has failed - i once had a screen with same problems :() order a screen from here newegg.com

1- click on top of the window on the title bar, while holding your left mouse button...move the window to the left until you see the right bottom corner about 1 inch from the right corner.

2 - click on the right bottom corner to resize the window and drag it all the way to the left about an inch away from the edge.

3-repeat step 1 until the window is back to normal size

CHECK THE OPTICAL ENGINE. THEN AGAIN THE LG BRANDS BELONG TO GARBAGE TIP

The dark side of the screen causes of the lamp alignment or prism glass alignment. This is critical you have to consult your LG technician to do this. But if you have any background o repair consult the service manual. Please careful not to touch the prism quarts so that you maintained the clarity of picture and brightness on the screen.