having blue screen problem in dell ultrabook 14z.

Problem signature:
  Problem Event Name:    BlueScreen
  OS Version:    6.1.7601.2.1.0.768.3
  Locale ID:    1033

Additional information about the problem:
  BCCode:    d1
  BCP1:    0000000000000038
  BCP2:    0000000000000002
  BCP3:    0000000000000000
  BCP4:    FFFFF88001EFCCA8
  OS Version:    6_1_7601
  Service Pack:    1_0
  Product:    768_1