I can confirm that if I turn scaling off on my video card I have the exact same issue you show, if I turn scaling back on in ati control panel and scale it slightly it goes back to normal
Here are some pictures. the first one is of the issue, this with 3D enabled, the second is showing scaling disabled, you can see slightly that the start button is cut off in this pic too. the third is with scaling enabled..
Do you have the ability to enable the scaling in the nVidia software?
Note: The scaling is different on 2D than 3D, If I set to 1080P resolution on video card I can turn scaling off and it fits screen correctly in 2D but when I turn on 3D it needs scaling. I go into this because I use scaling on 2D as well because I have my resolution set to 720 so I can read things.. (too damn small at 1080 at 15' away for my old eyes.Edited by Heywould - 6/7/13 at 3:47pm