my friend, a c++ programmer was helping me on a game on a computer with a bad graphics card but he had to comment out the dynamic lights for it to work (it gave the code line error # since it hadn't been published yet), and then I was trying it on a computer at work (which is definitely fast enough processorwise and has enough ram) which had a Radeon 7000 and played one of my games where you can create different types of objects and I could do anything but make a light. Also: all my games that had dynamic lights would automatically crash on this low-end graphics card but the ones without them would play fine.