I have found that when you install Office, you are best doing a "custom" install!
Don't select the "typical" option.
So when you do the former, the various programs are all listed for you to make your choices.
As an example if you don't want Access, you click on the small drop down arrow and select "not available".
That way you won't get an application that you don't want!
Likewise, on the more common ones like Word, Excel etc. click the arow and choose "run all from my computer".
The installer thingo often boots up when you may be trying to use a feature that was not installed under "typical".
It's not too late to do it now as by doing the "custom" bit, it will remove/add whatever you want without doing any harm to the already installed applications.