Out of no where, this morning when I turned on my macbook instead of going start to the apple start up screen it came up to a screen with the Macintosh HD icon with a arrow pointing to it. Once you choose the arrow it loads fine but its a pain in the but all the time. How can this just happen out of no where? How can I restore it to automatically chose the HD like it did before? I even tried going into sys perfs and reselecting the start up disk restart and same thing, did this several times with no luck..