Several things have to be noted here when talking about the USP3
First of all, make sure you install it correctly (there are several entries in the tickbox list of the USP3 where you select what you want to install, that have to be installed separately, as in: Only tick the one to be installed separately (for example the core update files or DirectX). If you fail to install these first or install them with something other ticked as well, you will botch your system. It is really important that you first install the core update files separately (without anything else ticked). And it is also important that you installed you drivers before that, and anything else on the list that needs to be installed separately you have to make sure that you do so (ONLY tick DirectX for example if you want that after updating the core files. Afterwards you can tick all the optional stuff that does not have to be installed separately in one go.
Secondly, Daemon Tools needs to be installed AFTER installing the USP3.