how to change computer screen from portrait to landscape I was just pressing this button and all the sudden my computer change to a portrait view so i have to bend my head to see anything could someone please help me

That option is usually specific to the video card or chip set. you will need to consult the documentation for you video card for that info.

One place to start would be to right click on the desktop and select properties. On my card, I can then go to the settings tab, then hit the Advanced button. From there I am in the controls for the graphics adapter and I can rotate the screen.

Mine also has hot keys set up so you might try this key combination...

<ctrl><alt><up arrow>

Good luck.

Well...go back to pushing that button again, it's probably a setting in your monitor, and just look for something that looks like a picture turning between portrait and landscape mode.