First, and foremost, NEVER post your real email addy..unless you want your pc filled with spam
Secondly, more info is needed
It isn't your screen-saver that is freezing, it's your pc..
http://support.microsoft.com/default.aspx?scid=kb;en-us;327565&Product=winx
read that link, however, it's probably not that
At the top of this page, in the search box, type in computer freezes
o
computer hangs, o
computer stops working...see how many posts of this nature come up, read thru the reply's.
First, it will give you an idea how to post a question that provides a little more information that is needed to supply an answer, and second..you may find an answer to your problem
There is also a thing called The Microsoft Knowledge Base, there you can find all kinds of information. Type in the same thing...computer freezes ( hangs) and see how many articles come up...and you will see that depending on the symptoms, the possible answers are endless