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 16. 7. 12 오전 8:02

-- System Details --
Details:
 Minecraft Version: 1.5.2
 Operating System: Windows 8.1 (amd64) version 6.3
 Java Version: 1.8.0_25, Oracle Corporation
 Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
 Memory: 95310576 bytes (90 MB) / 186232832 bytes (177 MB) up to 1060372480 bytes (1011 MB)
 JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
 AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
 Suspicious classes: FML and Forge are installed
 IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
 FML:
 LWJGL: 2.9.0
 OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
 Is Modded: Definitely; Client brand changed to 'fml,forge'
 Type: Client (map_client.txt)
 Texture Pack: Default
 Profiler Position: N/A (disabled)
 Vec3 Pool Size: ~~ERROR~~ NullPointerException: null[failed to get system properties (java.lang.RuntimeException: No OpenGL context found in the current thread.)]

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 net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:398)
 at net.minecraft.client.MinecraftAppletImpl.func_71384_a(SourceFile:56)
 at net.minecraft.client.Minecraft.run(Minecraft.java:733)
 at java.lang.Thread.run(Thread.java:745)
--- END ERROR REPORT 1af7311b ----------

이렇게 마크오류가 뜨는데 어떻게하죠? ㅠㅠ