Gnome 3 Failed To Load

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http://www.linuxquestions.org – I freshly installed Debian 7 Wheezy on an AMD 6 core with an AMD Radeon HD 7570 graphics card and 10 GB DDR3. On my first boot it said "Gnome 3 Failed to Load" 1) How do I figure out the issue and solve it? 2) Should I try for a different desktop environment? 3) How do I know which desktop this defaulted to when Gnome 3 failed? (HowTos)