Recently a client of mine asked me:
"Why does every computer I get slow down more and more after every software install and even worse after a Microsoft update, specifically the Service Packs?"
I can't TELL YOU how many times I have heard of some variation of this question over the past 20 years of PC consulting. It seems with every new PC that is released the speed gets faster and fast....until the day that you have to do the latest Service Pack for your Windows based PC.
The Why
There are many reasons your computer slows down, I will simply give you the top 4 reasons why your PC is slower as time goes on.