Minecraft Crash report

---- Minecraft Crash Report ----
// I let you down. Sorry :(

Time: 8/4/14 8:35 PM
Description: Initializing game

org.lwjgl.LWJGLException: Pixel format not accelerated
at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelForma t(Native Method)
at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat (WindowsPeerInfo.java:52)
at org.lwjgl.opengl.WindowsDisplay.createWindow(Windo wsDisplay.java:244)
at org.lwjgl.opengl.Display.createWindow(Display.java :306)
at org.lwjgl.opengl.Display.create(Display.java:848)
at org.lwjgl.opengl.Display.create(Display.java:757)
at org.lwjgl.opengl.Display.create(Display.java:739)
at net.minecraft.client.Minecraft.func_71384_a(Minecr aft.java:449)
at net.minecraft.client.Minecraft.func_99999_d(Minecr aft.java:808)
at net.minecraft.client.main.Main.main(SourceFile:101 )
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.j ava:131)
at net.minecraft.launchwrapper.Launch.main(Launch.jav a:27)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelForma t(Native Method)
at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat (WindowsPeerInfo.java:52)
at org.lwjgl.opengl.WindowsDisplay.createWindow(Windo wsDisplay.java:244)
at org.lwjgl.opengl.Display.createWindow(Display.java :306)
at org.lwjgl.opengl.Display.create(Display.java:848)
at org.lwjgl.opengl.Display.create(Display.java:757)
at org.lwjgl.opengl.Display.create(Display.java:739)
at net.minecraft.client.Minecraft.func_71384_a(Minecr aft.java:449)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.func_99999_d(Minecr aft.java:808)
at net.minecraft.client.main.Main.main(SourceFile:101 )
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.j ava:131)
at net.minecraft.launchwrapper.Launch.main(Launch.jav a:27)

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Windows 8.1 (x86) version 6.3
Java Version: 1.8.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 200936136 bytes (191 MB) / 259522560 bytes (247 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 5 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerform ance_javaw.exe_minecraft.exe.heapdump -XX:-OmitStackTraceInFastThrow -Xms256M -Xmx1024M -XX:MetaspaceSize=500M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML:
Launched Version: 1.6.4
LWJGL: 2.9.0
OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Pack: Default
Current Language: ~~ERROR~~ NullPointerException: null
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null