Problème de demarage

Bonjour, alors voila j'ai un problème quand je lance mon Minecraft il n'affiche pas Mojang il affiche un écran noir puis un rapport de crash:
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---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 06/07/13 12:30
Description: Initializing game

org.lwjgl.LWJGLException: Pixel format not accelerated
at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelFormat(Native Method)
at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat(WindowsPeerInfo.java:52)
at org.lwjgl.opengl.WindowsDisplay.createWindow(WindowsDisplay.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 atn.O(SourceFile:299)
at atn.d(SourceFile:598)
at net.minecraft.client.main.Main.main(SourceFile:101)


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

-- Head --
Stacktrace:
at org.lwjgl.opengl.WindowsPeerInfo.nChoosePixelFormat(Native Method)
at org.lwjgl.opengl.WindowsPeerInfo.choosePixelFormat(WindowsPeerInfo.java:52)
at org.lwjgl.opengl.WindowsDisplay.createWindow(WindowsDisplay.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 atn.O(SourceFile:299)

-- Initialization --
Details:
Stacktrace:
at atn.d(SourceFile:598)
at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --
Details:
Minecraft Version: 1.6.1
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 6034688 bytes (5 MB) / 26808320 bytes (25 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 1 total; -Xmx1G
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.6.1
LWJGL: 2.9.0
OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Pack: fr-minecraft_texture_0J6S__Texture 64x64_ Soartex Fanver _1.4.7___x_.zip
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
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J'aimerais avoir des réponses car j'ai payé Minecraft 20€ et si c'est pour ne pas jouer :S
Bref j'ai les boules merci de bien vouloir m'aider ;).