I had sles 11 sp2 installed on my system some days back and it was running fine.
Today after I restarted my system the gui is not coming up and system starts in command terminal.
sax2 command returns error:

sax: gui is missing, starting command line interface
sax: no x-server running
and startx return errors like failed to load modules freetype, fbdev, kbd, mouse.

What might be the issue and how to resolve it?