I was searching the web for “clean your computer” and found a recommendation on the Staples web site to right click your hard drive (usually the C drive), go to Properties, Tools, and then click on disk repair.
I did that last night and my computer would not boot afterwards.
I took it to a great repair shop today in 90035 and the man said my hard drive was corrupted. He said hard drives with heavy use last five – seven years. Mine was five years old.
So we replaced my hard drive and my video card and now I have a fast new computer with one terabyte of storage.
I admit I could not sleep until past midnight last night because of anxiety about my computer. Still, I was up before 6 am for Talmud study and prayer.