Modpacks won't launch

[foilrecoil]

So whenever I try to launch a modpack, the technic window will close and then reappear, but no actual game window appears. I've tried updating java, ram allocation, nothin works

and i get this crash report

---- Minecraft Crash Report ----
// Why did you do that?

Time: 2/11/19 1:00 AM
Description: Initializing game

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:449)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:808)
    at net.minecraft.client.main.Main.main(SourceFile:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

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

-- Head --
Stacktrace:
    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:449)

-- Initialization --
Details:
Stacktrace:
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:808)
    at net.minecraft.client.main.Main.main(SourceFile:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

-- System Details --
Details:
    Minecraft Version: 1.6.4
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_201, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 953694792 bytes (909 MB) / 1029177344 bytes (981 MB) up to 1029177344 bytes (981 MB)
    JVM Flags: 3 total; -Xms1024m -Xmx1024m -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
    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:
    Launched Version: 1.6.4-Forge9.11.1.965
    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)
    Resource Pack: Default
    Current Language: ~~ERROR~~ NullPointerException: null
    Profiler Position: N/A (disabled)
    Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

any help would be greatly appreciated!!

[JaariAtmc]

Try downgrading to 8u51 instead.

[foilrecoil]

OMG IT WORKED!!! U SIR R A LIFE SAVER!!!

OMG IT WORKED!!! U SIR R A LIFE SAVER!!!

[ecilonar]

i have the same problem yet i have no idea what the 8u51 is cause im new...

 

[foilrecoil]

8u51 is a java version, 8u51 = java 8 update 51, so uninstall your current version of java and download and install the 8u51 version