dump error BCCode: a

can you help me how to fix this error. it always happen when i tried to start my computer . this is the code: i really dont know what is that. any help appreciate.
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1124

Additional information about the problem:
BCCode: a
BCP1: 82AF0670
BCP2: 00000000
BCP3: 00000000
BCP4: 82CCF48D
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\102110-11778-01.dmp
C:\Users\user\AppData\Local\Temp\WER-19141-0.sysdata.xml

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

Follow these instructions: http://www.sevenforums.com/crashes-debugging/96879-blue-screen-death-bsod-posting-instructions.html