Can't render Blue LED... is it a glitch?

I try to render an assembly with a blue LED appearance inside that show lights between two parts... It works with very other LED color appearances, except the blue one. It even works if I use a green LED appearance and I change its color to blue (it renders a blue LED light), but when I use a blue LED light from the start, it just stays plain black...

Is there anyone how experienced problem with blue LED appearance? Is it a glitch?

I thought that it might be because my graphic card was not an "approved" graphic card (AMD Radeon HD 6310) at the beginning, for the same reason I can't see FLOOR REFLECTION in the scene or see in REALVIEW GRAPHICS, but it works fine when I use the other LED colors...

It's not a big problem since I can work around it, but still...

Thanks!

Franc P.

SolidworksPhotoview 360