fails to start

fails to start after it shows the mojang screen it fails and goes back to the launcher screen with the following message:

[19:44:26] [Client thread/INFO]: Setting user: ChaaChaa1
[19:44:26] [Client thread/INFO]: (Session ID is token:f8942ff62e324ad2bfa844e0d17cd981:e71664a61b8a43e8b4f6e7c28819321b)
[19:44:30] [Client thread/INFO]: LWJGL Version: 2.9.1
[19:44:30] [Client thread/INFO]: Reloading ResourceManager: Default
[19:44:33] [Sound Library Loader/INFO]: Starting up SoundSystem...
[19:44:33] [Client thread/WARN]: File minecraft:sounds/mob/ghast/fireball.ogg does not exist, cannot add it to event minecraft:item.fireCharge.use
[19:44:33] [Thread-6/INFO]: Initializing LWJGL OpenAL
[19:44:33] [Thread-6/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
[19:44:35] [Thread-6/INFO]: OpenAL initialized.
[19:44:35] [Sound Library Loader/INFO]: Sound engine started
[19:44:39] [Client thread/INFO]: Created: 512x512 textures-atlas
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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=0x27293e88, pid=4288, tid=4420
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3. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)

4. Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode windows-x86 )

5. Problematic frame:

6. C [ig4dev32.dll+0x3e88]
   #

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\Lauren\AppData\Roaming\.minecraft\hs_err_pid4288.log
   #

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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    AL lib: (EE) alc_cleanup: 1 device not closed
    Java HotSpot(TM) Client VM warning: Using incremental CMS is deprecated and will likely be removed in a future release