All of the advice above is good. You do clean your PC periodically, don't you? My Inspiron is 4 years old and I run clean and virus software several times a week. It pretty much runs like a charm. I keep it free of all except essential software such as Chrome and Firefox, and MSOffice.
Someone above cited CNET as a source of free software. If you haven't, download cleaner software and give it a run.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."
