BlueScreen BCCode: 18

Hi I had a BSOD meanwhile watching DVD movie ,OS win7 ultimate t sp 1,cpu AMD ,,.... (if you need dump files tell me)

Problem signature:
  Problem Event Name:    BlueScreen
  OS Version:    6.1.7601.2.1.0.256.1
  Locale ID:    1065

Additional information about the problem:
  BCCode:    18
  BCP1:    859CB800
  BCP2:    88086598
  BCP3:    00000001
  BCP4:    00000001
  OS Version:    6_1_7601
  Service Pack:    1_0
  Product:    256_1

Best Regards;