I’ve noticed my computer slowing down quite a bit lately. Is there anything I can do to speed it up WITHOUT paying for anything?

Thanks in advance.

For 1 year or 2 I have a computer thats so slow and I cant fix it,so that’s why i need some advice.

I want to speed my comp up get rid of all files which I can not find and I need someone help who know what they are talking about. Like I do not want to have to buy something for it when I know there is a way to do it without spending money so please may someone show me how and steps of what i have to do ?
How to de-frag your hardrive

you have to have the full version, but definately well worth it. it will fix some errors for free, but i highly recommend it. it found 1800 errors on my computer…and i was wondering why it was sooooo slow. hope this helps someone out there!