I bought Diablo 3 from battle.net shop and when i press install it just starts loading.
# 1 Jan 4, 2017
# 2 Jan 4, 2017Hello HOO!
Sorry to hear you're having issues installing Diablo III... if it's stuck without any movement on the bar, it may be a security program blocking things, or Battle.net is being restricted from writing new files.
Disabling Security Applications
If that doesn't work, I'd move on to trying running Battle.net in administrator more, or setting up a new administrator account.
Creating a New Administrator Account
Best of luck in your adventures