Picture problem sir ihave a 21"inch HP P1100 (Sony D2846 monitor N3 Chassis).problem is when i adjust pic up or down it shift more high or down not proper centre & when i zoom it pic turn in side on both top corner.cinema scope pic is ok i mean to say 2"top side & 2" bottom side.now i adjust vertical hieght pic shift more up or more down. kindly reply soon. thanks. satnam singh NEVER POST EMAILS

SOURCE: HP mx705 17 in.CRT Conventional Monitor vertical goes bad

it seems that youre monitor has a dry solder problem, try tapping it if the picture resumes to normal for a while than get it resoldered from a technician. if it soesnot solve problem than look out for a burnt resistance.

SOURCE: usercontrol automatically displayed when bootup

Please change the switch pannel  and check 

SOURCE: monitor settings

Have you checked the actual board that has the buttons to see fi there is an issue there?

If you've found nothing there and still experience the issue, sounds to me like you might be looking at a bad micro.

SOURCE: Screen Adjustment

On your monitor at the bottom there is 3 buttons. The one all the way to the left is the "menu" button. The next one (going right) is the "NEGATIVE" button. The next one (going right) is the "POSITIVE" button.

You can move your screen around. First, start by pressing the menu button.Then, a menu in blue, with a bunch of little white icons will appear. Next, go over two icons by pressing the positive button twice. Then, proceed to push in the "menu" button again. A bar will appear. By pressing your negative button, your screen will move left. Pressing your positive button will make your screen move right. Adjust your screen until the black on both sides are of even proportion. Then, press the menu button to return to the orginal menu you started at. Proceed to press your positive button two more times. Then, press your menu button. Then, once again, use your positive button, and your negative button to adjust your screen to even out the black on the top and bottom.