[17:11:03] [Client thread/INFO]: Setting user: JediLiam2008

Put the summary of the bug you're having here

What I expected to happen was...:
be able to play the game just purchased

What actually happened was...:
[17:11:03] [Client thread/INFO]: Setting user: JediLiam2008
[17:11:03] [Client thread/INFO]: (Session ID is token:bfd638e0aaa044e991c69b02d2864bfd:b461180b247c4992b13723d94bffff91)
[17:11:08] [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=0x6cf85861, pid=7136, tid=7540
   #
3. JRE version: 6.0_20-b02
4. Java VM: Java HotSpot(TM) Client VM (16.3-b01 mixed mode windows-x86 )
5. Problematic frame:
6. C [aticfx32.dll+0x25861]
   #
7. An error report file with more information is saved as:
8. C:\Users\Mon\AppData\Roaming\.minecraft\hs_err_pid7136.log
   #
9. If you would like to submit a bug report, please visit:
10. http://java.sun.com/webapps/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.
    #

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...