I use Microsoft Security Essentials. It’s free and does a good job.
If you want to know which Anti-Virus program to use, you can use anything listed at https://www.icsalabs.com/products?tid[]=4216.
They test with a huge zoo of viruses and anything on that test has to be able to clean every virus in the zoo if your machine is already infected and has to protect your machine from becoming infected in the first place.
Worth keeping track of.
(I used to manage their lab.)
I don’t much care which security program I use as long as I can access my banking sites. Not being able to get into PayPal or Amex would be disastrous for me.
Is Microsoft Security Essentials already installed, waiting to be activated? Or do I have to download it?
The security system won’t even allow me to print, and the printer is also HP.