Hmmm, try to hit Ctrl - Alt - F7 on the keyboard.... that's the primary display (0) for X.
perhaps it's already running.... if not, try typing:
startx -- :1
This opens an X on display 1 wich can be accessed via Ctrl - Alt - F8
(F1 - F6 are "text" consoles)
Don't know if this can help, but you can always give it a try