buttons to change resolution hidden

How can I get the buttons visible after a family member changed the resolution without applying it first to see what it would look like? I can get to the apply but not able to accept it to change it. It is a 17" monitor set on 480X640 and it doesn't utilize the screen like it should.

Start in safe mode and right click the screen, go to the properties in the dropdown, then the settings tab, and set your actual resolution to 640/480. The system should reboot with the controls visible in the screen when you again right click the normal screen, and hit properties and the settings tab.

You may still have to resize a few things or move the title bar around to see the buttons.

While in the Settings screen, Alt-A is Apply, and Alt-D is Advanced. Letter O should get you to the OK button, which is also the default button if you hit the Enter key.

what operating system is this...has this happened since the 17inch installed...or has it done it before...