Crashing by entering a server

it happened todau for like 6 hours and keep going! when i enter a server, my whole minecraft crash!! can someone help? the report crash is this:
A fatal error has been detected by the Java Runtime Environment:
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1. EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x278a4960, pid=5896, tid=1464
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2. JRE version: Java(TM) SE Runtime Environment (8.0_25-b18) (build 1.8.0_25-b18)
3. Java VM: Java HotSpot(TM) Client VM (25.25-b02 mixed mode windows-x86 )
4. Problematic frame:
5. C [ig4icd32.dll+0x44960]
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6. Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
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7. An error report file with more information is saved as:
8. C:\Users\AMIR\AppData\Roaming\.minecraft\hs_err_pid5896.log
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9. If you would like to submit a bug report, please visit:
10. http://bugreport.sun.com/bugreport/crash.jsp
11. The crash happened outside the Java Virtual Machine in native code.
12. 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