My monitor moves the screen picture itself !

When I boot my PC and when the monitor turns on (for example when exiting from standby mode) the screen image is projected too low, the bottom pixels are not visible !

First, i moved the image each time i had to in order to re-center it again. Then, I noticed that several minutes later (when the monitor is "hot") the image moves up so if i re-centered it first, the top pixels are now too high and out of the monitor.

and such things happen each time i turn it on

So i decided to leave it and wait until the screen image is correctly centered (there aren't too much lost lines at the bottom, about 8-10 pixels).

My monitor is an 19" AOC 9Glr. (not flat screen, not TFT)

Do you think I should return my monitor to the shop ?

I used to have the same monitor actually. Great color on it, but a bit distorted. Excellent value though.

My 19" eventually bit the dust - Not before I sold it though, Hehe! The picture turned all white.

You may be able to take advantage of the 3 year warranty that comes with it. AOC does a pretty job of honoring the warranty from wha I"ve heard.. But with the current prices of monitors, right now might be a good time to get one of those shiny flat screens you've had your eyes on or an even bigger monitor... If money permits of course.