Ezt írja ki nekem a minecraft (lent) mi lehet a baj?

---- Minecraft Crash Report ----

// There are four lights!

Time: 2014.05.25. 10:41

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:252)

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 ban.ag(SourceFile:340)

at ban.f(SourceFile:713)

at net.minecraft.client.main.Main.main(SourceFile:148)