monitor of dell latitude d600

[acuariano]

hi guys,,i got a dell d600 laptop...
before reinstalling my os ..by accident i press a botton around the botton power..
and the picture got smallewr...with black bars around....
-after finishing reinstalling..i set to 1024x768 ..this increase the picture a little
..so how can i fix this problem please..get the picture back to normal size...let me know please
thanks in advance

 

[CalcProgrammer1]

Looks like you changed the way the GPU scales lower resolution images, probably in the BIOS or a keyboard shortcut. Try changing it via your graphics card's settings panel if it has one (nVidia Control Panel, ATi Catalyst) or go in your BIOS and look for it.