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Message: <blockquote data-quote="SP2184" data-source="post: 522031" data-attributes="member: 38675">I went on vaction and when I got back my computer is messed up!Why does this happen to me?In my company they had someone fill in my postion while I was gone. He worked on my mac and he even said he never worked on one before. I come back and something is wrong with it.When I turn it on.. a gray screen comes up with a box and the earth blinking in the center.. then it goes to a little folder icon blinking.. then the fan start going really really fast.. for about 3-5 min. Then it stops and it let me log in. What happen?! What did he do?! <img src="/mac_images/images/smilies/Grimmace.png"  class="smilie" loading="lazy" alt=":Grimmace:" title="Grimmace    :Grimmace:" data-shortname=":Grimmace:" /> What can I do to stop this from happening???Thanks!</blockquote>