I actually have two computers, and a laptop. The one computer still crashes intermittently, I am going to clean the fans off and see if that changes anything. This question is for the other two computers. Now, granted, there is nothing wrong with either of them, I was wondering if there is a way I could give them a "Tune Up," if there was a way for you all to help me maintain the computers and speed up the laptop. 
I'll be waiting to hear back.
I'll be waiting to hear back.