Blue screan

Hi sir
my problem............ I will start a video chat trough Skype and continue in 2 or 3 min are running than.after my laptop go to itself shutdown flush blue screen flush cruse file dumping.........whiten after 60 sec laptop itself restart.
I am using dell inspiron 14r n4010 and os -window 7ultimate (my os is not update in sp1 adnd sp 2)
 
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