blue screen error

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: a
BCP1: 00000001
BCP2: 00000002
BCP3: 00000000
BCP4: 82CA039F
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1

Files that help describe the problem:
C:\Windows\Minidump\021711-19640-01.dmp
C:\Users\Arijit\AppData\Local\Temp\WER-48563-0.sysdata.xml

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