I'm not sure if it's truly a secret or not, but McAfee.com has a free virus scanner on their webpage. It's not easy to find, but it's extremely effective in killing over 50 hidden virus, trojans and other parasites that can effect your computers health.
I had a computer that was acting strangly. Unfamilular errors would keep popping up. Everything was running slowly. I decided to search for a virus program. I was reading about a particular virus on the McAfee website. The solution recommended buying the full program. But they also listed a free virus scanner if you were in an emergency. Well, I wasn't in an emergency but I tried their free program anyway. WOW!!! It scanned and deleted 15 or more virus and trojans from my computer.
I rebooted and my computer ran much faster and with no more errors. I've never had a better "free" program. Of course it's no replacement for a full virus protection program. This free program only hunts down and kills 52 viruses. There are still thousands out there. But for "free" I can't complain.
After freeing my computer of all the evil, I decided to buy the full McAfee program. If a company is willing to give a great product away for free, I'd like to reward that by buying their program... Thanks McAfee!!!
The name of the program is called Stinger.exe.... They've changed the name a few times because hackers tried to attack it. First go to McAfee.com. Type in Stinger in the search box or go here: http://vil.nai.com/vil/stinger/
Download and run the Stinger.exe program. Not only will this free program find the virus, it will delete it from your computer too... That should get you back up and running smoothly. Get it while it's still free. Then go out and buy the full version or download it online too...