I keep getting this error the second I open minecraft (not the launcher, but the actual game):

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 bib.at(SourceFile:622)
at bib.aq(SourceFile:458)
at bib.a(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:123)

I've tried to find a fix for this, the most common one being to update my driver, but I checked my driver is up to date. If it makes any difference, I just changed from a 32-bit Windows 7 to a 64-bit Windows 7.