I've been searching all day for a fix, and i didn't find it. Minecraft won't start and it doesn't matter what i do . When i try to launch, i get this error:

[01:31:26] [main/INFO]: Setting user: Marshmallow
[01:31:26] [main/INFO]: (Session ID is token:6b55ea9b03ae4735ee41cb208fc865f6:cc3d4ba05d694fb9bb5a3cc148253c08)
[01:31:28] [Client thread/INFO]: LWJGL Version: 2.9.1
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1. A fatal error has been detected by the Java Runtime Environment:
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2. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x2a39d09f, pid=5996, tid=3640
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3. JRE version: Java(TM) SE Runtime Environment (7.0_67-b01) (build 1.7.0_67-b01)
4. Java VM: Java HotSpot(TM) Client VM (24.65-b04 mixed mode windows-x86 )
5. Problematic frame:
6. C [ig4dev32.dll+0xd09f]
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7. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
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8. An error report file with more information is saved as:
9. C:\Users\Marshmellow aka Nuno\AppData\Roaming\.minecraft\hs_err_pid5996.log
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10. If you would like to submit a bug report, please visit:
11. http://bugreport.sun.com/bugreport/crash.jsp
12. The crash happened outside the Java Virtual Machine in native code.
13. See problematic frame for where to report the bug.
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[error occurred during error reporting , id 0xc0000005]