I have lots of answers for problems with defrag, clock time, performance, system resources, problems with passwords, opening files, etc. I also probably know of a freeware/shareware application for anything you want to do: sharing Internet, firewalls, games, utilities, graphics, audio, etc.
I am the Director of Information Systems for a large law firm. I also have a home network of multiple computers and other devices.
George Washington University, BA University of Michigan Law School, JD