Feltelepítettem a videóvezérlő kártyám a java-t 1-2 napig ment is a mincecraft de most nem jó. Mi lehet a baj?

Amikor elindítom fekete lesz a képernyő és ezt írja ki:

Minecraft has crashed!

----------------------

Minecraft has stopped running because it encountered a problem.

--- BEGIN ERROR REPORT 7cf3a456 --------

Generated 2012.05.14. 15:33

Minecraft: Minecraft 1.2.5

OS: Windows 7 (x86) version 6.1

Java: 1.7.0_04, Oracle Corporation

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

LWJGL: 2.4.2

OpenGL: null version null, null

java.lang.IllegalStateException: glGetString(GL_VERSION) returned null - possibly caused by missing current context.

at org.lwjgl.opengl.GLContext.getSupportedExtensions(GLContext.java:187)

at org.lwjgl.opengl.ContextCapabilities.initAllStubs(ContextCapabilities.java:4355)

at org.lwjgl.opengl.ContextCapabilities.<init>(ContextCapabilities.java:4661)

at org.lwjgl.opengl.GLContext.useContext(GLContext.java:352)

at org.lwjgl.opengl.Context.makeCurrent(Context.java:183)

at org.lwjgl.opengl.Display.makeCurrent(Display.java:730)

at org.lwjgl.opengl.Display.makeCurrentAndSetSwapInterval(Display.java:896)

at org.lwjgl.opengl.Display.create(Display.java:860)

at org.lwjgl.opengl.Display.create(Display.java:784)

at net.minecraft.client.Minecraft.a(SourceFile:204)

at net.minecraft.client.Minecraft.run(SourceFile:657)

at java.lang.Thread.run(Unknown Source)

--- END ERROR REPORT 982d8b76 ---------- mi lehet a baj?