How to fix this error I keep getting when I try to play minecraft?

I recently bought a cyberpower gaming computer with windows 8.1 not 8 so i keep getting this error saying ---- Minecraft Crash Report ----
// Oops.

Time: 1/6/14 8:48 PM
Description: Initializing game

org.lwjgl.LWJGLException: Pixel format not accelerated
at org.lwjgl.opengl.WindowsPeerInfo.nChoose… Method)
at org.lwjgl.opengl.WindowsPeerInfo.chooseP…
at org.lwjgl.opengl.WindowsDisplay.createWi…
at org.lwjgl.opengl.Display.createWindow(Di…
at org.lwjgl.opengl.Display.create(Display…
at org.lwjgl.opengl.Display.create(Display…
at org.lwjgl.opengl.Display.create(Display…
at net.minecraft.client.Minecraft.startGame…
at net.minecraft.client.Minecraft.run(Minec…
at net.minecraft.client.main.Main.main(Main…

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

-- Head --
Stacktrace:
at org.lwjgl.opengl.WindowsPeerInfo.nChoose… Method)
at org.lwjgl.opengl.WindowsPeerInfo.chooseP…
at org.lwjgl.opengl.WindowsDisplay.createWi…
at org.lwjgl.opengl.Display.createWindow(Di…
at org.lwjgl.opengl.Display.create(Display…
at org.lwjgl.opengl.Display.create(Display…
at org.lwjgl.opengl.Display.create(Display…
at net.minecraft.client.Minecraft.startGame…

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.Minecraft.run(Minec…
at net.minecraft.client.main.Main.main(Main…

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_45, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 5779696 bytes (5 MB) / 26808320 bytes (25 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX: HeapDumpPath=MojangTricksIntelDriver… -Xmx512M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: huzuni
LWJGL: 2.9.0
OpenGL: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: []
Current Language: ~~ERROR~~ NullPointerException: null
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null
Anisotropic Filtering: Off (1)
If you can help I will give 10 points please don't tell me to update my drivers because there fully updated and if your gonna tell me to reinstall opengl then can you please make a video tutorial on youtube telling how to do it.

I think this is little bit different from the usual problems. You contact with the below link. That community will help you.

Maybe try re-downloading minecraft and installing newest java/re-installing it other than you contact mojang or use the forums stated above.