Cuda Devkit Won't Install

Hi All,
I have been trying to download the Cuda Devkit for hours now, and nothing seems to be working. I have updated my drivers, deleted the old Cuda installer and installed another one and nothing has worked. Whenever I go to run it, the only thing that happens is I get the windows blue “running” circle for a few seconds and then nothing. I would really love to get this installed so any help would be amazing