I can't help but think that my pc may by infected with something, however there aren't any real visual signs of an infection. The pc is running with a 70GB hard drive (20GB free), it has 512MB of ram, dual core processor running at 2.3GHz (i think). For the past 6 months (or a little longer) the rpm of the fan has just been high for no apparent reason. I have throughly cleaned the inside with compressed air to make sure the air flow is adequeate. It is in the perfect place for adequate airflow! I ran Trendmicro Housecall and it found over 24 infections. However, everytime I run trendmicro I get the same number, 24 infections. The processor and pagefile usage is also unusually high. Even when no one is even logged into the pc, the fan is running a high rpm. Also ever when a user IS logged in, but no programs are running (other than the background services) the RPM is still high. Lord help if you start the internet browser, not to mention if you visit any site like youtube to stream video, the pc sounds like a plane engine!
Also, my free subscription with McAfee (from Comcast had expired over an year ago) and I need some programs (free) that will actively take the place of McAfee. Also please note that this fan speed problem didn't occur until after my subscription expire and the program was no long actively protecting my pc.
What do I need to do to accurately get this problem fixed on my own?
p.s. I successfully completed the cisco IT: Essentials course for PC Hardware and Software so im no where near a rookie when it comes do dealing with a pc in general. I just need help with this one!