my launcher crash every time i start

I love minecraft. So, I just bought the minecraft today.
but, when I started the launcher, the launcher crashed every time.
the report say "The game crashed whilst initializing game Error: org.lwjgl.LWJGLException: Pixel format not accelerated".
I don't know how to solve the problem. I have tried to search for solution but I can't find the exact one. Please help me !!!

My regards,
Bassam