Windows* Desktop Appears Smaller than My Display Screen
Try changing the Intel® Graphics Driver scaling option. Simultaneously press the Ctrl, Alt, F12 keys to open the driver Control Panel. If using Windows 8*, switch to the desktop first before pressing the Ctrl, Alt, F12 keys.
For the latest Intel® Graphics Drivers, navigate to the Display section in the Control Panel. Choose Maintain Display Scaling or Customize Aspect Ratio.
For slightly older Intel® Graphics Drivers, select the Scaling drop down arrow, click Scale Full Screen, and then click OK.
For even older Intel® Graphics Drivers, click Display Settings > Aspect Ratio Options, select the option you want, and then click OK.