OpenGL changes

I’m a developer and use OpenGL graphics. I just bought a HP Spectre laptop and the graphics is messing up. I get no errors but lines appear to be randomly drawn. If I switch to use Lighting, the graphics is drawn correctly. I just gave a class and 20% of the computers had this graphics problem. My Sony Vaio I’ve been using for development for several years has no problem. Any suggestions?

What GPU is in the Sony?
What GPU is in the HP?
Have you updated your drivers?

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