Display creation fails on Windows 7

[NateS]

A user has reported this error on Windows 7:

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:174)
   at org.lwjgl.opengl.Display.createWindow(Display.java:308)
   at org.lwjgl.opengl.Display.create(Display.java:816)
   at org.lwjgl.opengl.Display.create(Display.java:744)
   at singsong.game.SingSongGameContainer.<init>(SingSongGameContainer.java:50)
   at singsong.game.SingSongGame$2.run(SingSongGame.java:263)
   at singsong.game.SingSongGame.main(SingSongGame.java:291)

Here is a code snippet showing the code that fails:

try {
	Display.create(new PixelFormat(8, 8, 0, samples));
} catch (Throwable ex1) {
	Display.destroy();
	try {
		Display.create(new PixelFormat(8, 8, 0));
	} catch (Throwable ex2) {
		Display.destroy();
		Display.create(new PixelFormat()); // FAILS HERE!
	}
}

FWIW, samples == 0.

Any ideas?

Edit: fixed [ code ] tag.

[kappa]

any idea's which graphics card the user has?

[NateS]

Yes, sort of. I should have included that they are using a "Dell Vostro 1500". From a cursory search, it appears the cheapest option is an nVidia GeForce 8400 GS. It seems to be a relatively recent computer (the latest similar Dell Vostro is only at model number 1520).

[Matzon]

Missing OpenGL drivers. Either add allowSoftwareOpenGL or ask them to install drivers.

[NateS]

Bingo. allowSoftwareOpenGL let it run, but at ~5fps. Thanks guys!