How to update graphics drivers?

I have a PC and it won't play minecraft and it says I should update my graphics drivers. I tried this a few times but it won't work. I think i'm doing it the wrong way but when I download the junk it says its up to date. Someone please help!

Added (1). Heres the error message if you need it:

Added (2). ---- Minecraft Crash Report ----
// Uh… Did I do that?

Time: 6/11/14 1:01 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…

Guest

1. Start button n go to control panel 2. Search for performance n mainteance 3. System tab 4. Hardware tab 5. Device manager tab 6. Look for video or graphics card and click plus sign next to it and ull see update driver!

byron1816