Downloaded 1.7.4 launcher. Last ran with 1.6.4... Double-clicking on launcher starts 1.7.4 game window, screen blanks then launcher re-appears. Development Console tab has following near bottom:

[09:29:20 INFO]: Client> [09:29:20] [main/INFO]: Setting user: A_n_NatT

[09:29:20 INFO]: Client> [09:29:20] [main/INFO]: (Session ID is token:4c1cd71d7e654a2aa447fa1178dd4384:3e822da0fece41149f7f40e273deda54)

[09:29:21 INFO]: Client> [09:29:21] [Client thread/INFO]: LWJGL Version: 2.9.1

[09:29:22 INFO]: Client> [09:29:22] [Client thread/INFO]: Reloading ResourceManager: Default

[09:29:22 INFO]: Client>

[09:29:22 INFO]: Client> Starting up SoundSystem...

[09:29:22 INFO]: Client> Initializing LWJGL OpenAL

[09:29:22 INFO]: Client> (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)

[09:29:22 INFO]: Client> OpenAL initialized.

[09:29:22 INFO]: Client>

[09:29:22 INFO]: Client> [09:29:22] [Sound Library Loader/INFO]: Sound engine started

[09:29:25 INFO]: Client> [09:29:25] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas

[09:29:25 INFO]: Client> [09:29:25] [Client thread/INFO]: Created: 256x256 textures/items-atlas

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # A fatal error has been detected by the Java Runtime Environment:

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x06313e88, pid=6400, tid=5196

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # JRE version: Java(TM) SE Runtime Environment (7.0_45-b18) (build 1.7.0_45-b18)

[09:29:25 INFO]: Client> # Java VM: Java HotSpot(TM) Client VM (24.45-b08 mixed mode, sharing windows-x86 )

[09:29:25 INFO]: Client> # Problematic frame:

[09:29:25 INFO]: Client> # C [ig4dev32.dll+0x3e88]

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # Failed to write core dump. Minidumps are not enabled by default on client versions of Windows

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # An error report file with more information is saved as:

[09:29:25 INFO]: Client> # C:\Users\Jim\AppData\Roaming\.minecraft\hs_err_pid6400.log

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> # If you would like to submit a bug report, please visit:

[09:29:25 INFO]: Client> # http://bugreport.sun.com/bugreport/crash.jsp

[09:29:25 INFO]: Client> # The crash happened outside the Java Virtual Machine in native code.

[09:29:25 INFO]: Client> # See problematic frame for where to report the bug.

[09:29:25 INFO]: Client> #

[09:29:25 INFO]: Client> AL lib: (EE) alc_cleanup: 1 device not closed

[09:29:28 ERROR]: Game ended with bad state (exit code 1)

[09:29:28 INFO]: Deleting C:\Users\Jim\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-866211912532856

[09:29:28 INFO]: Ignoring visibility rule and showing launcher due to a game crash

[09:29:28 WARN]: Couldn't delete C:\Users\Jim\AppData\Roaming\.minecraft\versions\1.7.4\1.7.4-natives-866211912532856 - scheduling for deletion upon exit