Q: Lost icons after enlarging screen on Mac Pro

Hi Rcado1114,

Thanks for visiting Apple Support Communities.

It seems like you might be using the Zoom feature on your MacBook Pro and can't find the Dock (the row of icons) at the bottom of your screen.

To try and zoom out, press the Option + Command + Minus key on your keyboard, or use one of the other methods in OS X Yosemite: Zoom pane of Accessibility preferences.

The Dock may also be hidden. Try this step next to make sure Dock hiding is off:

To turn Dock hiding on or off, choose Dock > Turn Hiding On or Turn Hiding Off from the Apple () menu.

From

Mac Basics: The Dock holds your favorite apps, documents, and more - Apple Support

Best Regards.