Minecraft crashes upon launching

Minecraft crashes on launch - opens second screen with Mojang logo then reopens the launch screen

[14:35:32 INFO]: Launching game
[14:35:32 INFO]: Looking for old natives & assets to clean up...
[14:35:32 INFO]: Unpacking natives to C:\Users\Christian\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-768125873768
[14:35:33 INFO]: Launching in C:\Users\Christian\AppData\Roaming\.minecraft
[14:35:33 INFO]: Half command: C:\Program Files\Java\jre7\bin\javaw.exe -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -Djava.library.path=C:\Users\Christian\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-768125873768 -cp C:\Users\Christian\AppData\Roaming\.minecraft\libraries\java3d\vecmath\1.3.1\vecmath-1.3.1.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\net\sf\trove4j\trove4j\3.0.3\trove4j-3.0.3.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\ibm\icu\icu4j-core-mojang\51.2\icu4j-core-mojang-51.2.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\io\netty\netty-all\4.0.10.Final\netty-all-4.0.10.Final.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\15.0\guava-15.0.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.4\gson-2.2.4.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\com\mojang\authlib\1.3.1\authlib-1.3.1.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-api\2.0-beta9\log4j-api-2.0-beta9.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\org\apache\logging\log4j\log4j-core\2.0-beta9\log4j-core-2.0-beta9.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.1\lwjgl-2.9.1.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.1\lwjgl_util-2.9.1.jar;C:\Users\Christian\AppData\Roaming\.minecraft\libraries\tv\twitch\twitch\5.16\twitch-5.16.jar;C:\Users\Christian\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5.jar net.minecraft.client.main.Main
[14:35:35 INFO]: Client> [14:35:35] [main/INFO]: Setting user: LordBizness
[14:35:35 INFO]: Client> [14:35:35] [main/INFO]: (Session ID is token:fa808ef21cfc418092ec8c1c3dd782e9:0ce9c63d1a87447fbd3ae12d8ab20fd9)
[14:35:35 INFO]: Client> [14:35:35] [Client thread/INFO]: LWJGL Version: 2.9.1
[14:35:37 INFO]: Client> [14:35:37] [Client thread/INFO]: Reloading ResourceManager: Default
[14:35:37 INFO]: Client> 
[14:35:37 INFO]: Client> Starting up SoundSystem...
[14:35:37 INFO]: Client> Initializing LWJGL OpenAL
[14:35:37 INFO]: Client>     (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)
[14:35:38 INFO]: Client> OpenAL initialized.
[14:35:38 INFO]: Client> 
[14:35:38 INFO]: Client> [14:35:38] [Sound Library Loader/INFO]: Sound engine started
[14:35:38 INFO]: Client> [14:35:38] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[14:35:39 INFO]: Client> [14:35:39] [Client thread/INFO]: Created: 256x256 textures/items-atlas
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> #  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x05423e88, pid=4516, tid=480
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_51-b13) (build 1.7.0_51-b13)
[14:35:39 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (24.51-b03 mixed mode, sharing windows-x86 )
[14:35:39 INFO]: Client> # Problematic frame:
[14:35:39 INFO]: Client> # C  [ig4dev32.dll+0x3e88]
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> # An error report file with more information is saved as:
[14:35:39 INFO]: Client> # C:\Users\Christian\AppData\Roaming\.minecraft\hs_err_pid4516.log
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> # If you would like to submit a bug report, please visit:
[14:35:39 INFO]: Client> #   http://bugreport.sun.com/bugreport/crash.jsp
[14:35:39 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[14:35:39 INFO]: Client> # See problematic frame for where to report the bug.
[14:35:39 INFO]: Client> #
[14:35:39 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed
[14:35:39 ERROR]: Game ended with bad state (exit code 1)
[14:35:39 INFO]: Deleting C:\Users\Christian\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-768125873768
[14:35:39 WARN]: Couldn't delete C:\Users\Christian\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-768125873768 - scheduling for deletion upon exit
[14:35:39 INFO]: Ignoring visibility rule and showing launcher due to a game crash