Ragazzi accedo a Minecraft e mi esce questo: 
 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 02/11/11 19.24 
Minecraft: Minecraft Beta 1.8.1 
OS: Windows 7 (x86) version 6.1 
Java: 1.6.0_29, Sun Microsystems Inc. 
VM: Java HotSpot Client VM (mixed mode), Sun Microsystems Inc. 
LWJGL: 2.4.2 
[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(SourceFile:233) 
 at net.minecraft.client.Minecraft.run(SourceFile:629) 
 at java.lang.Thread.run(Unknown Source) 
--- END ERROR REPORT 1954470e ---------- 
Come risolvo?