PROGRAM WILL NO LONGER PLAY ON OUR PC

When we log on to run game and press play....this message appears
[20:54:36] [main/INFO]: Setting user: luvcat67
[20:54:36] [main/INFO]: (Session ID is token:227bd7fb4877495581b3cbc085f534d3:38758c3c02f24b178de3aec2cc7b128d)
[20:54:37] [Client thread/INFO]: LWJGL Version: 2.9.1
[20:54:39] [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.

[20:54:40] [Sound Library Loader/INFO]: Sound engine started
[20:54:41] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[20:54:42] [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=0x2adf3e88, pid=12044, tid=15708
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3. JRE version: 7.0_25-b17

4. Java VM: Java HotSpot(TM) Client VM (23.25-b01 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\Vivian\AppData\Roaming\.minecraft\hs_err_pid12044.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