dmp file and blue screen error Windows 7

I keep getting the blue screen error and i have no idea what is going on i was wondering if someone could help me out here the information:

Dump File         : 051613-10670-01.dmp
Crash Time        : 5/16/2013 1:19:51 AM
Bug Check String  : SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Bug Check Code    : 0x1000007e
Parameter 1       : ffffffff`c0000047
Parameter 2       : fffff800`032ee7fc
Parameter 3       : fffff880`035ea2f0
Parameter 4       : fffff880`035ea390
Caused By Driver  : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+a27fc
File Description  : NT Kernel & System
Product Name      : Microsoft® Windows® Operating System
Company           : Microsoft Corporation
File Version      : 6.1.7601.18113 (win7sp1_gdr.130318-1533)
Processor         : x64
Crash Address     : ntoskrnl.exe+a27fc
Stack Address 1   : 
Stack Address 2   : 
Stack Address 3   : 
Computer Name     : 
Full Path         : C:\Windows\Minidump\051613-10670-01.dmp
Processors Count  : 4
Major Version     : 15
Minor Version     : 7601
Dump File Size    : 279,336