Vertical and horizental picture expand and please help me to adjust it

It might help if you listed the brand and model of your TV, but usually on the remote you will see some sort of mode button. You can change the picture size there. Or you can go into your system menu and change it in the display menu. The typical ones are widescreen, zoom, stretch, etc. Also try changing the picture aspect ratio. 16:9 will give you widescreen while 4:3 will give you regular. Also, another problem might be that the channel you are watching or your cable box is not in HD. If the channel is not specifically an HD channel, the widescreen setting will not work properly and you will need to adjust it to a different setting to keep from getting the black bars on the side. Hope that helps.