both directx and c++ are failing. Hopefully that is enough for someone else to help guide you thru this as I do not know if manually installing both of those components would work or not.
Here is the actual error from your log file:
Download Failed, Installation aborted, Result=1603
I would recommend that you try downloading your product using the virtual assistant by following the directions here:
http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/How-to-...