LiamP5, I run CCleaner every other day or so to remove excess files, so I do not think that is the problem. Also, my problem is not so much a slow computer as it is a computer that freezes and applications that stop working altogether forcing me to reboot, which only makes things works better for a couple of hours.
USASMA, I ran BSOD and attached the file. Looks like it is looking for antivirus software. If you are interested, I normally run Norton Suite but am writing bleeping computer because neither Norton Antivirus nor Norton Power Eraser found anything. Since the first post, I installed Avast and AGV Antivirus programs but then uninstalled Avast. I think I found out it was not truly free. AVG found the HS/Heur virus and eliminated it, but I see minimal improvement.
I ran Event Viewer, but had problems. Whether I try to save the file calling it Admin (it has an evtx extension) or Admin.evtx, I get an error message that says, "The system cannot find the file specified." Not sure what to do now. By the way, the viewer says there are 17,962 events, which prompts me to ask, Is that bad?