League of Legends c++ error 64 bit

I recently got a new asus pc, for my animation course and of course, better gaming. It came with windows 10, and i was like... hmmm. i hope this runs smoothly. When i try to install league of legends, it tells me i have to download the 64 bit version of the application, but my computer is obviously 84 bits. I tried downloading the 84 bits version and redownloading league. It still required me to download the 64 bit version.