So last week my screen was frozen on the screen saver. I turned it off and back on. It took forever to start up and brought me to a OS X Utilities screen. First, I did disk utility. There was an error at first but running first aid fixed it. Rebooted and still got utilities screen. Then I tried to restore from a time machine backup. It allows me to select a back up but after I click continue it brings me to the Select a Destination screen and it says "no time machine backups were found". I would prefer to restore from a backup but I'm having problems even completely just reinstalling OS X, when I try to choose recovery disk it tells me that is it locked. I have tried quite a few things to unlock with no luck. Any idea what is wrong or what I can do? Any help is greatly appreciated. I have been trying for about a week to figure this out. And using a tablet or my husband's computer with windows in the meantime and it sucks. Thanks!