How can software utilities improve the performance of computer systems?

If you do nothing to maintain your (or any) PC, over time it will fill with files, references and data that it doesn't need, or used to need but doesn't any more.
So it takes the PC longer to find the files it does want.
The effect will be to make it start up more slowly, shut down takes longer, and in fact everything takes longer, as the 'junk' files take up progressively more space on your hard drive.
The computer isn't 'slower', it is just having to spend more time doing things it shouldn't have to.
If nothing else, have a look at;
www.piriform.com
www.auslogics.com
(Even better, try them, most programs are free).
 
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