I have a 17" Toshiba monitor (Tekbright 717).
The other day, suddenly, the image on screen expanded horizontally (around a 30% or more). It also bent and deformed inwards on the middle (it is like a waist).
Now I can not see the two lateral (left and right) portions of the image.
This happens in all screen resolutions and I have also lost the ability to adjust the horizontal onscreen settings.
What can I do to see the perfect rectangular image shape of the appropriate size again?