where can I download cycles as an addon and why does blender not run? I don't know why but the newer versions of Blender don't run on my PC(I have an AMD radeon graphics - 1GB), but the newer versions of cycles have seemed to improve a lot, like giving a pre-made materials to smokes. So, I wanted to try this, since blender doesn't run I wanted to know if I could download cycles as an addon?
Plus, if there are any suggestions regarding how can I get newer versions of blender to run in my PC, please mention them as well, because I'm so confused as it meets all the requirements that Blender's site mention I should to run the newer versions in my PC. My machine has an i5-4200U CPU @ 1.60GHz, RAM is 4.00GB and is a 64-bit operating system with an AMD RADEON 1GB graphics card.
details from the caps viewer:




first I go through the install process:


Then blender install all fine:


and when I finally hit the blender icon it just crashes without even opening,it shows this:


Plus I'm using windows 7(ultimate).
Cycles cannot be downloaded as an add-on and installed in an older version of Blender - it's too tightly integrated for that.

In case of future googlers coming across this question, Cycles can be used standalone, but that's not really related to your problem.

If you believe blender should be able to run on your computer (your specific graphics card supports OpenGL 2.1, google the model name), then you should report a bug and let the developers help you find out what's wrong. When describing your problem, be very specific about what's wrong, what error messages there are, your hardware, etc.