Hi, sounds like your PC needs a good clear out.
First, run Disc Cleanup including the Other Options tab and remove all but the most recent restore point.
Second, download C-Cleaner and run it and the Registry cleanup option. Or use another registry cleaner of your choice.
Third, go to Run, Msconfig, startup, and untick anything that is not realy required to be running at startup.
Forth, go to Start, programs, Startup, and delete anything in this folder.
Fifth, Run Defrag.
This should keep you busy for a while but might speed up your system.