windows has recovered from an unexpected shutdown

Problem signature:
  Problem Event Name:BlueScreen
  OS Version:6.1.7601.2.1.0.256.48
  Locale ID:1033

Additional information about the problem:
  BCCode:d1
  BCP1:00000030
  BCP2:00000002
  BCP3:00000000
  BCP4:8EA6B8A5
  OS Version:6_1_7601
  Service Pack:1_0
  Product:256_1

Files that help describe the problem:
  C:\Windows\Minidump\051514-21590-01.dmp
  C:\Users\XXXX\AppData\Local\Temp\WER-6996707-0.sysdata.xml

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