There is nothing to install with Puppy. It is an OS that runs entirely in RAM. But, if you are fine keeping it hidden, that is okay too. http://puppylinux.org/main/Download%20Latest%20Release.htm
Edit: See this link. There was a recent update from Micorosoft that can cause the problem.
After you install this security update, fonts that are installed in a location other than the default fonts directory (%windir%\fonts\) cannot be changed when they are loaded into any active session. Attempts to change, replace, or delete these fonts will be blocked, and a "File in use" message will be presented.
Edited by JohnC_21, 17 August 2014 - 07:21 PM.