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 05.03.16 23:39
-- System Details --
 Details:
 Minecraft Version: 1.5.2
 Operating System: Windows 10 (x86) version 10.0
 Java Version: 1.8.0_71, Oracle Corporation
 Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
 Memory: 391671400 bytes (373 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
 JVM Flags: 2 total; -Xms512m -Xmx1024m
 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: 2.4.2
 OpenGL: ~~ERROR~~ NullPointerException: null
 Is Modded: Definitely; Client brand changed to 'fml, forge'
 Type: Client (map_client.txt)
 Texture Pack: faithful64pack-v1.2.0b.zip
 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.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(Unknown Source)
 --- END ERROR REPORT f86265cc
Java - установил/обновил?