interpret error signature

can Anyone interpret following error signatures?? I have client whose PC suddenly reboots and when it comes back up he gets the following error signature:

BCCode : 1000008e BCP1 : C0000005 BCP2 : BF8010FD BCP3 : F960CA48 BCP4 : 00000000 OSVer : 5_1_2600 SP : 2_0 Product :256_1

BCCode : 100000d1 BCP1 :3A466C81 BCP2 : 00000002 BCP3 : 00000000 BCP4 : F0EBDE67 OSVer : 5_1_2600 SP : 2_0 Product :256_1