minecraft wont open it crashes upon opening

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 2/23/13 3:44 PM
Description: Failed to start game

org.lwjgl.LWJGLException: Could not create context
	at org.lwjgl.opengl.WindowsContextImplementation.nCreate(Native Method)
	at org.lwjgl.opengl.WindowsContextImplementation.create(WindowsContextImplementation.java:50)
	at org.lwjgl.opengl.Context.<init>(Context.java:120)
	at org.lwjgl.opengl.Display.create(Display.java:858)
	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:232)
	at asq.a(SourceFile:56)
	at net.minecraft.client.Minecraft.run(SourceFile:515)
	at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 1.4.7
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_09, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 384220168 bytes (366 MB) / 514523136 bytes (490 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -Xms512m -Xmx1024m
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Suspicious classes: No suspicious classes found.
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	LWJGL: 2.4.2
	OpenGL: ~~ERROR~~ NullPointerException: null
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Texture Pack: Default
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: ~~ERROR~~ NullPointerException: null