The screen doesn't show the whole image, it is to wide, to tall, so there is no upper and lower toolbar, same on sides. I tried with the screen control on lower front of the monitor, but it is not enough.

Something like this?
http://www.samsung.com/us/home-appliances/refrigerators/french-door/30-wide-22-cu-ft-french-door-refrigerator-white-rf220nctaww-aa

It may due to the screen problem

Interference. Separate the wiring so it doesn't touch. Touching wires create cross-talk of signals and keeps from running normal.

Could you provide more information? What do you mean when you say, "closing?" Do you mean there is a black band around the picture? If so that means the original picture is recorded at a lower pixel density than your TV will display.
In the past most TV program signals provided a picture dimensions (in computer standards) very roughly 600 pixels wide by 400 pixels tall. What this means is that a picture of that pixel size will display as a small, squarish image slightly wider than it is tall on a (now) standard 1080p LCD television--which produces an image 1920 pixels wide by 1080 pixels high.
That would be nearly unwatchable (picture too small) except for the fact that most TVs compensate for the relatively small size of "standard definition TV (SD TV, as opposed to HDTV) by enlarging the image so that the top and bottom edges of the picture touch the top and bottom of the TV screen. This will leave black bands on either side of the picture. Some LCD TVs will automatically stretch BOTH dimensions of the image, which yields a distorted, "sqaushed" image.
All my comments above apply to both standard LCD and 3D-LCD TVs, by the way.
A more precise overview of the facts about TV picture size can be found here:
http://en.wikipedia.org/wiki/Display_resolution

You might not be able to. If the screen size doesn't adjust with the wide/view mode/picture format button on the television remote control you have to change the resolution on the pc. You right click on an empty spot on the desktop, choose properties, and then choose the settings tab. A lower resolution will cause the image to fill the screen but the icons get really big. The image isn't as refined. However you may be able to play around with it enough to find a good enough resolution and a view mode with the Emerson remote that will work out for you (a combination of the two).

If original problem was caused by sediment burning out lower element, did you clean sediment out of water heater when changing lower element?
Two element water heaters are 240V.
Thermostats cut power on one hot wire, but 240V circuit has 2 hot wires. So lower element has power at all times coming from the red wire.
1) Use ordinary tester or multimeter set to 240V <> test each screw of lower element to bare metal part of water heater. Each screw should show 120V. If there is no power, then upper thermostat is defective, screw on upper thermostat is loose, or red wire between upper and lower parts of water heater is bad.
2) Remove wires from lower element. Use continuity tester or multimeter set to ohms <> test across both screws of element to see if power travels through element <> if element is bad, then continuity tester will not light up and multimeter will show no ohms. Put wires back on element after test.
3) Start with cold water in tank. Turn on water heater & upper element will turn on. Put ear on side of tank to hear if upper element is heating water. Test #3 screw to #2 screw on low left side of thermostat, should read 240V > Test #3 screw to #4 screw on low right side of thermostat, should read 0V.
Put ear on side of tank. When upper element turns off: Test #3 screw to #2 screw on low left side of thermostat, should read 0V > Test #3 screw to #4 screw on low right side of thermostat, should read 240V. If this test shows 0V and 0V, then upper thermostat is bad. If reading is correct, immediately move to next test.
http://waterheatertimer.org/images/Thermostats-numbered-divided-500.jpg
4) Turn temp on lower thermostat to 150. Using ordinary tester or multimeter set to 240V <> Test across both screws of lower element. If there is no reading, and you know element is good from step 2, then lower thermostat is bad, or wire is bad between lower element and lower thermostat, or wire is bad between lower thermostat and top part of heater.
5) Test across both lower thermostat screws, should read 240V.If this test is good, it means wires are good. Put jumper wire across both screws of lower thermostat, and test lower element again. If element finally turns on with jumper wire, then lower thermostat is bad.
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http://waterheatertimer.org/How-to-troubleshoot-electric-water-heater.html

If wire is bad between upper and lower parts of water heater, and water heater has tight-fitting 2" foam insulation, it usually indicates water heater replacement.

Your resolution may be set to high on the computer. Or you have a standard screen resolution set and since the monitor is a wide screen, it is cutting it off.
Try a different resolution 1440x900 is what the va1930wm uses.
If using a laptop with a standard type screen on it, you may have to set the laptop to just light the monitor to allow this setting to take.
Since this monitor is a wide screen, it may have options in the menu to stretch or zoom on an image if the resolution is not set to a wide screen format.

check for filter(capacitor) problem in the video portion of the tv, and control could be dirt or finger contamination inside the remote.

There is nothing wrong with the monitor, the issue is that the web page you are looking at is designed for a lower resolution than you LCD is set for (Web pages are normally designed for 800 x 600 or 1024 x 768) you like have a wide aspect ratio monitor.

As I sit here writing this on my 12" wide aspect LCD I have a 2" wide white space on each side of my screen due to my 1280 x 800 aspect ratio.

The issue is one of WEB PAGE DESIGN not the fault of your computer video settings. The web page is written using page frames and fixed aspect ration settings to ensure that the page displays properly regardless of monitor type.

If you had a high end LCD (WUXGA 1920 x 1200), the web page would fill the upper left 1/4 of the screen.

If you lower the resolution of your display, then you'll have fuzzy icons and text, so essentially, get used to it.

Eventually, wed design will catch up with current display technology.

try using the tv remote to change the screen size and keep changing it until you find the correct size