Cant remember the name, but the shop in the Target parking lot by Carl's Jr has helped out with several different computer issues over the years. Sometimes, staff there has been, um, well, they seem less than enthused, but other times have been fine. Think of the gruff auto mechanic that knows his business but understands his machines better than relating to people.
It all depends on what you use your computer for. If it is just word processing, email and browsing the web, you can pretty much take all your applications off except for your browser (Microsoft, Firefox, Chrome,, etc), your antivirus (Norton, Avast, etc), your email client (outlook, thunderbird, etc) and your operating system (windows, IOS,, etc), productivity suite (Office, open office, etc)
The main thing you will probably want to save are all of your documents (word files, email, pictures, etc) You really should be doing that regularly anyway in a backup. External hard drives are cheap and work well for that.
Every couple of years, I completely wipe my drive and reinstall the OS from scratch. I then load/download all the relevant programs that I run regularly. It's a pain, but it keeps things somewhat clean
"Of all tyrannies, a tyranny sincerely exercised for the good of its victims may be the most oppressive" -- C.S. Lewis
If the only way to combat "global warming" was to lower taxes, we would never hear of the issue again. - Anonymous
"Society in every state is a blessing, but Government, even in its best state, is but a necessary evil; in its worst state an intolerable one" — Thomas Paine, 𝘊𝘰𝘮𝘮𝘰𝘯 𝘚𝘦𝘯𝘴𝘦 (1776)