taken from another forum (4gb ram installed are they same brand part#'s? I'd suggest reseating all sticks ram... memtest is about as usefull as pulling fingers.
BSoD's regarding IRQL not less or equal,, is most likely driver conflict, with 64bit OS thats no supprise.. you should find error # after BSoD's IRQL not less or equal .. post error number's)
it is still under warranty so ill get a new one however just want to make sure this is the problem