you could check
C:\Users\[yourwindowsusernamehere]\AppData\Local\Origin\Logs\Bootstrapper_Log.txt
or
C:\ProgramData\Origin\Logs\Bootstrapper_Log.txt
if your origin is older
scroll down and if the latest
event url line is something like this
12: [Jan 18 05:13:22] Event URL: https://api1.origin.com/autopatch/2/upgradeFrom/10.5.59.36848/en_US/PROD?platform=PCWIN&osVersion=10.0.####&servicePackVersion=#.#
Origin should let you download and play the game as long as you have a 64bit system from windows 7 and up
If it's reporting 6.1, origin is thinking you're on windows 7, 6.0 is vista, 6.2 is Win 8, 6.3 is Win 8.1, 6.4 is pre-release windows 10
you could also open start menu and type winver (search) to run winver.exe which should tell you what your specific build of windows is
