I just recently downloaded and updated Minecraft to 1.7.5 but the launcher says this
[17:26:00 INversions\1.7.5\1.7.5.jar net.minecraft.client.main.Main
[17:26:08 INFO]: Client> [17:26:08] [main/INFO]: Setting user: Shedi78
[17:26:08 INFO]: Client> [17:26:08] [main/INFO]: (Session ID is token:d7dc7d08fc2d4c7d97eb30426166598e:46840aade317405fbfb0589b141bb8e6)
[17:26:08 INFO]: Client> [17:26:08] [Client thread/INFO]: LWJGL Version: 2.9.1
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x690ba2a1, pid=4676, tid=4132
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)
[17:26:09 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (24.45-b08 mixed mode, sharing windows-x86 )
[17:26:09 INFO]: Client> # Problematic frame:
[17:26:09 INFO]: Client> # C [atioglxx.dll+0x8a2a1]
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # An error report file with more information is saved as:
[17:26:09 INFO]: Client> # C:\Users\HP\AppData\Roaming\.minecraft\hs_err_pid4676.log
[17:26:09 INFO]: Client> #
[17:26:09 INFO]: Client> # If you would like to submit a bug report, please visit:
[17:26:09 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp
[17:26:09 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.
[17:26:09 INFO]: Client> # See problematic frame for where to report the bug.
[17:26:09 INFO]: Client> #
[17:26:09 ERROR]: Game ended with bad state (exit code 1)
[17:26:09 INFO]: Deleting C:\Users\HP\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-179381928934273
[17:26:09 INFO]: Ignoring visibility rule and showing launcher due to a game crash
[17:26:09 WARN]: Couldn't delete C:\Users\HP\AppData\Roaming\.minecraft\versions\1.7.5\1.7.5-natives-179381928934273 - scheduling for deletion upon exit