1. If you haven't already, please adjust the screen resolution to the native resolution for your monitor. (It should be 1920 X 1200)
2. If that doesn't fix it, then visit your graphics card's website, then download and install the latest driver for your video card.
Hope this helps.
All but about 1" all way around. Acer docs pretty pathetic. Checked control panel and seems all ok there. Running Win 7 64 bit Home Edition. Monitor is S243H from Acer.