Miért nem akar elindulni semmilyen minecraft? HELP PLS!?

Mindig amikor szeretnék játszani minecraft-al nem enged.

Megnyitom a gamet és rámegyek hogy play.

Ez idő után egy kicsivel kijön ez a hibaüzenet:

---- Minecraft Crash Report ----

// Daisy, daisy...

Time: 2014.05.20. 6:11

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 azd.Z(Minecraft.java:515)

at azd.e(Minecraft.java:891)

at net.minecraft.client.main.Main.main(SourceFile:103)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at net.minecraft.(Unknown Source)

at net.minecraft.$26.run(Unknown Source)

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 azd.Z(Minecraft.java:515)

-- Initialization --

Details:

Stacktrace:

at azd.e(Minecraft.java:891)

at net.minecraft.client.main.Main.main(SourceFile:103)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect

.Method.invoke(Unknown Source)

at net.minecraft.$26.run(Unknown Source)

-- System Details --

Details:

Minecraft Version: 1.7.2

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.7.0_55, Oracle Corporation

Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation

Memory: 3820000 bytes (3 MB) / 34742272 bytes (33 MB) up to 259522560 bytes (247 MB)

JVM Flags: 0 total;

AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used

IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0

Launched Version: 1.7.2

LWJGL: 2.9.0

OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.

Is Modded: Very likely; Jar signature invalidated

Type: Client (map_client.txt)

Resource Packs: []

Current Language: ~~ERROR~~ NullPointerException: null

Profiler Position: N/A (disabled)