My original hard drive on my mid 2011 IMac crashed and I have updated it with a new 3TB WD Blue drive. I reset the whole thing like it was new out of the box and let my wife use it for her photo editing work. I am trying to login to iCloud with her apple user id and password and it will not accept it. I receive the notification on her iPhone, but it shows that I have either a wrong username or password on the iMac. Is there something that I am doing wrong? Also, with the fresh install, I am running OSX 10.7.5 and would like to update to a newer OS, is this possible. Thanks in advance!