installed completely,but has graphical problem

[m1m11]

i just installed it and i used os selector to boot.everything went normal,but the screen appearred like tis.

is it a graphic related prob?JaS,do u have a solution to it?my graphic card is Integrated Intel® Graphics Media Accelerator 950™,256 shared memory.thanks for any ideas

after connecting to the external monitor,i got tis image.http://img246.imageshack.us/img246/2965/29092006ah4.jpg