Minecraft hiba, segítssél! :S?

---- Minecraft Crash Report ----

// I feel sad now :(

Time: 2014.01.09. 17:22

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 ats.O(Minecraft.java:331)

at ats.d(Minecraft.java:676)

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 ats.O(Minecraft.java:331)

-- Initialization --

Details:

Stacktrace:

at ats.d(Minecraft.java:676)

at net.minecraft.client.main.Main.main(SourceFile:101)

-- System Details --

Details:

Minecraft Version: 1.6.2

Operating System: Windows 7 (x86) version 6.1

Java Version: 1.7.0_45, Oracle Corporation

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

Memory: 10319368 bytes (9 MB) / 25759744 bytes (24 MB) up to 1067057152 bytes (1017 MB)

JVM Flags: 3 total; -Xmx1024m -XX:+AggressiveOpts -Xincgc

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

Suspicious classes: Config]

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: Very likely; Jar signature invalidated

Type: Client (map_client.txt)

Resource Pack: Default

Current Language: ~~ERROR~~ NullPointerException: null

Profiler Position: N/A (disabled)

Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

Ezzel mit lehet csinálni? Win7-em van, eddig windows xp-n hibátlanul működött mostmeg ez, ezt hogylehet megoldani hogy működjön? :ss fontos :S