I can not play the demo on my computer please help

I am having a hard time getting the demo to play on my PC on windows 7professional. When I click on "play demo" the MOJANG screen comes up for a second and then this is what displays, can someone please help me??

[13:15:34] [main/INFO]: Setting user: Player
[13:15:34] [main/INFO]: (Session ID is token:0b224e4b74504808b539d5c0265dea4d:00000000-0000-0000-0000-000000000000)
[13:15:35] [Client thread/INFO]: LWJGL Version: 2.9.1
[13:15:36] [Client thread/INFO]: Reloading ResourceManager: Default

Starting up SoundSystem...
Initializing LWJGL OpenAL
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
OpenAL initialized.

[13:15:37] [Sound Library Loader/INFO]: Sound engine started
[13:15:38] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[13:15:38] [Client thread/INFO]: Created: 256x256 textures/items-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=0x2a513e88, pid=336, tid=2076
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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+0x3e88]
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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\dell\AppData\Roaming\.minecraft\hs_err_pid336.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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    AL lib: (EE) alc_cleanup: 1 device not closed