One way to avoid Virus infections on your PC might seem a little extreme, but have you thought about removing your hard drive.
You could then run a Linux distribution disc, either CD or DVD, this will run Linux entirely in memory, meaning your hard drive can't be infected with computer viruses.
Liberte' or Tails will allow you to do this.

You do need quite a bit of memory to do this of course, around 2 Gb
Any downloads you might want to save can be saved to USB stick.
If this stick is encrypted, then you have very powerful, military grade computer security.

Of course, theoretically, your USB stick might become infected or become a carrier.  But you main PC will remain infection free, since you have no hard drive that can be infected.

Each time you boot your machine, it's a brand new installation, entirely into memory of Linux.
I don't think that doing this is going to be any more troublesome than having to deal with constant threats and infections.

Think about it, if want want help and advice on tightening up your security and privacy, give me a call.

For most people, this level of security might not be warranted, I sometimes use it, but mostly use Windows or Puppy Linux, occasionally I will switch to high security mode.

A linux distribution disc might also be called a live disc or  a live distribution disc.

Youtube Live Linux Discs


Next post might be on higher security, anonymous emails.  

Thanks for reading.