почему когда я вхожу в майнкрафт Пиратская версия на виндовс 7 мне пишет

Bad video card drivers!
-----------------------

Minecraft was unable to start because it failed to find an accelerated OpenGL mode.
This can usually be fixed by updating the video card drivers.

--- BEGIN ERROR REPORT 7fe0271 --------
Generated 12.04.13 17:15

- Minecraft Version: 1.4.2
- Operating System: Windows 7 (x86) version 6.1
- Java Version: 1.6.0_16, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
- Memory: 32083360 bytes (30 MB) / 65470464 bytes (62 MB) up to 1070399488 bytes (1020 MB)
- JVM Flags: 4 total; -Xmx1024m -Xnoclassgc -XX:+AggressiveOpts -Xincgc
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- FML: ~ERROR~ NullPointerException: null
- LWJGL: 2.4.2
- OpenGL: ~ERROR~ NullPointerException: null
- Is Modded: Definitely; 'forge,fml'
- Type: Client
- Texture Pack: ~ERROR~ NullPointerException: null
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: ~ERROR~ NullPointerException: null[failed to get system properties (java.lang.NullPointerException)]

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:185)
at org.lwjgl.opengl.Display.createWindow(Display.java:311)
at org.lwjgl.opengl.Display.create(Display.java:856)
at org.lwjgl.opengl.Display.create(Display.java:784)
at org.lwjgl.opengl.Display.create(Display.java:765)
at net.minecraft.client.Minecraft.a(Minecraft.java:408)
at net.minecraft.client.Minecraft.run(Minecraft.java:752)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 2fe17862 ----------