My minecraft won't load to me it keeps giving my this

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x50b54200, pid=1468, tid=4888
#
# JRE version: 7.0_17-b02
# Java VM: Java HotSpot(TM) Client VM (23.7-b01 mixed mode windows-x86 )
# Problematic frame:
# C 0x50b54200
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# If you would like to submit a bug report, please visit:
# bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

--------------- T H R E A D ---------------

Current thread (0x4abb0000): JavaThread "Minecraft main thread" daemon [_thread_in_native, id=4888, stack(0x4f750000,0x4f7a0000)]

siginfo: ExceptionCode=0xc0000005, ExceptionInformation=0x00000008 0x50b54200

Registers:
EAX=0x9cc755a4, EBX=0x505a6580, ECX=0x5055bb00, EDX=0x00000004
ESP=0x4f79f064, EBP=0x504e9ef4, ESI=0x00000000, EDI=0x4f79f0b4
EIP=0x50b54200, EFLAGS=0x00010246

Top of Stack: (sp=0x4f79f064)
0x4f79f064: 690d6ed1 505a6580 504e9ef4 00000000
0x4f79f074: 4f79f11c 50a9db44 504eb104 00000004
0x4f79f084: 00000030 00000000 00000000 50a9d834
0x4f79f094: 00000001 00000001 00000000 50b54200
0x4f79f0a4: 00000000 504e9ef4 4feaf780 5055bb00
0x4f79f0b4: 9cc755a4 000002d1 7dccccce 7dccccce
0x4f79f0c4: 7dccccce fdccccce fdccccce fdccccce
0x4f79f0d4: 6908ae94 4f79f0b4 00000000 00001fa0

Instructions: (pc=0x50b54200)
0x50b541e0: 00 00 00 00 00 00 00 00 5e dd 53 ed 6a 2f 19 08
0x50b541f0: 00 00 00 00 f0 41 b5 50 0d 06 00 00 01 00 00 00
0x50b54200: 55 8b ec 53 56 57 8b d9 8b ca 8b 75 08 81 e1 fc
0x50b54210: ff ff ff 0f 28 83 90 04 00 00 0f 28 8b d0 04 00

Register to memory mapping:

EAX=0x9cc755a4 is an unknown value
EBX=0x505a6580 is an unknown value
ECX=0x5055bb00 is an unknown value
EDX=0x00000004 is an unknown value
ESP=0x4f79f064 is pointing into the stack for thread: 0x4abb0000
EBP=0x504e9ef4 is an unknown value
ESI=0x00000000 is an unknown value
EDI=0x4f79f0b4 is pointing into the stack for thread: 0x4abb0000

can someone help me please?