Problemes Minecraft !

Bonjour,
Cela fait un moment que je cherche une solution, et pas moyen de trouver ...
Donc j'implore votre aide car j'aimerais pouvoir jouer a Minecraft.

Le jeux ce lance, reste bloquer sur un écran blanc, a cesse de fonctionner et pour terminer crash.

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 05/02/15 17:24
Description: Initializing game

ctz: Unable to fit: minecraft:items/leather_boots - size: 16x16 - Maybe try a lowerresolution resourcepack?
at ctw.c(SourceFile:60)
at cua.b(SourceFile:197)
at cua.a(SourceFile:77)
at cxh.j(SourceFile:553)
at cxh.a(SourceFile:139)
at cxk.a(SourceFile:23)
at cvt.a(SourceFile:99)
at bss.ak(SourceFile:440)
at bss.a(SourceFile:302)
at net.minecraft.client.main.Main.main(SourceFile:124)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at ctw.c(SourceFile:60)
at cua.b(SourceFile:197)
at cua.a(SourceFile:77)
at cxh.j(SourceFile:553)
at cxh.a(SourceFile:139)
at cxk.a(SourceFile:23)
at cvt.a(SourceFile:99)
at bss.ak(SourceFile:440)

-- Initialization --
Details:
Stacktrace:
at bss.a(SourceFile:302)
at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
Minecraft Version: 1.8.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 122460376 bytes (116 MB) / 207003648 bytes (197 MB) up to 523501568 bytes (499 MB)
JVM Flags: 7 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Xmx512M
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 1.8.1
LWJGL: 2.9.1
OpenGL: Mobile Intel(R) 4 Series Express Chipset Family GL version 2.1.0 - Build 8.15.10.1892, Intel
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because EXT_framebuffer_object is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: No
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: []
Current Language: English (US)
Profiler Position: N/A (disabled)