For years I've had the setting of automatic log in for my iMac at home. I am going on vacation and wanted to set a password on the iMac to log onto the computer as protection in case my home was broken into. As a test I shut down the computer. Then did a re-start. The screen shows my name and icon with an icon for guest to the right. Below I see icons for sleep, restart or shut down. I have a 2nd monitor plugged into my iMac. I am using a wireless keyboard and also the wireless track pad. The curser will move on the iMac screen but nothing clicks. I have a feeling that I need a usb mouse to get past this screen. If I do use that (I no longer have one), and get the computer open I will definitely go back into preferences and set it to automatic log in. Is there something I might have done wrong when I changed the settings? I clicked the drop down arrow and chose NO for automatic log in. I then clicked the padlock shut and clicked out of preferences. Everything worked perfectly before I changed the setting to no automatic login. I am typing this from my MacBook Air that I use when traveling. Thanks for any help.