can't starx in virtualbox

I install opensuse in virtualbox, but I can’t start xwindow.
then I press ctrl+alt+f2, I can use it in terminal, then I use command startx, the problem is showed again.
like this picture( please click this link to see the photo.
how i can solve it

Please wait on any reply’s until this is moved to the right forum.

Thank You,

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Using Startx is not the proper way to startup KDE or GNOME. Normally you load the Extensions pack into VirtuaBox which properly handles video and such. You need to tell us about the VirtualBox host system, VirtualBox version and if the Extension pack is loaded and what openSUSE version and Desktop that you are trying to use.

Thank You,