My minecraft was running perfectly well until yesterday. I was playing minecraft and suddenly it crashes and when I see the launcher I realised that all my PC resolution was messed up a bit. It was not that bad only the screen was a little bit strange, all was a little bit larger.

In that moment I tried to change it but it was impossible for me, I dont know how to change it back and for my surprise minecraft was not working when I just click on Launch to start playing...

Here is the error please help me My screen resolution and my Minecraft are completely messed up:

Couldn't set pixel format
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:247)
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 ave.ap(SourceFile:521)
at ave.am(SourceFile:363)
at ave.a(SourceFile:310)
at net.minecraft.client.main.Main.main(SourceFile:124)