My computer doesn't shut down for a long time .Immediately it restarts and launches startup repair,while booting my dvd drive doesn't appear after system restore i got the problem details as:
Ypur Computer has recovered from an unexpected shutdown
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: 9f
BCP1: 00000004
BCP2: 00000258
BCP3: 85D67A70
BCP4: 8078ADF4
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1
Ypur Computer has recovered from an unexpected shutdown
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: 9f
BCP1: 00000004
BCP2: 00000258
BCP3: 85D67A70
BCP4: 8078ADF4
OS Version: 6_1_7600
Service Pack: 0_0
Product: 256_1