New computer won't log in or recognize mouse

I just set up my dad a new desktop for Christmas. It worked fine until we turned it off to set up other things on the desk. Now when we turn it on it won't recognize the mouse it came with or a mouse i plug in. It also won't log in. Is there any way to reset from the log in screen using only the keyboard?


I just set up my dad a new desktop for Christmas. It worked fine until we turned it off to set up other things on the desk. Now when we turn it on it won't recognize the mouse it came with or a mouse i plug in. It also won't log in. Is there any way to reset from the log in screen using only the keyboard? http://ift.tt/eA8V8J
http://ift.tt/2Civ1uU