what is the best free antivirus?

Just personal opinion of course. I use Avast , I have also got superantispyware and Malwarebytes. I recently changed to Comodo firewall which seems fine and I seem to boot up quicker. They are all free for personal use and I have had no trouble with Viruses Trojans Hackers etc. I also use Windows Defender from the Microsoft site. It is safe to use two anti-spy products but never use more than one A/V as it can cause conflicts. You should run A/V and anti spy weekly.

Download safely from

http://download.cnet.com/windows/

http://www.tucows.com/software.html?t=68%85

2

The best way is to download Ccleaner here http://bitly.com/UrALrK

Or you can go on Windows operating system locate the command prompt and go there to do the following:

Create a Recovery file of system and date it today.

Then begin by;

delete the 'Temp' folders..they have hidden subfolders so you need to set the attributes in order to bypass this. For each subfolder delete all cookies and rubbish left behnd after install-uninstalled programs. Do a 'dir' command to check your progress. Make sure the 'Temp' file is empty.

goto c:\windows\prefetch and delete everything in there..no exceptions

goto c:\windows folder and delete all the '$' files that have been installed by updates. They can all be succesfully deleted and just take up disk space.

Locate the Internet Temporary Files..Check to see how high the saving level is..some have it set at 30 days..but that stores faaaar tooo much data..though it slows down the system overal. Keep this to a minimum..suggest 2 or 5 at most.

Delete all 'cookies' all those you don't need.

Locate the windows directory and go through the folders you know and those you don't need. Check this once a week at least. Some programs will install under XP as NT and older systems where there is no check of systems weight.

Check to see that system files have not changed since last booting. Things like .ini files or .bat are important items.

Check for 'Hidden Directories' all over the disk...do this at the command prompt:

dir *.* /ah wil show these hidden directories

Check the 'dir' command for all parameters

Definitely AVG - free.avg.com

But having a decent antivirius is only 1/2 way to virus security. Don't download suspicious files, use Mozilla FireFox because it has built in security to protect you from viruses. The main thing is to be vigilant! I am also like you with downloading lots of things and I never get viruses because I know what to look for, and over time so will you.

Avast Home Edition

Bit Defender Free 2009 Edition

Clamwin (servers)

Rising Anti-virus

Microsoft Security Essentials

these are on my top list!!

AVG sucks everything i download is a virus so i dont go with AVG

If you need a free antivirus program, I would suggest that you try using Microsoft Security Essentials, which can be downloaded from the link below.

http://microsoft.com/Security_Essentials

In addition to running antivirus scans, I would also suggest that you run frequent antispyware scans.

If you need a free antispyware program, perhaps you should try using MalwareBytes, which can be downloaded from the link below.

http://malwarebytes.org/

Good luck and I hope I helped you!

no doubt the answer is Avira !!!!!! a very simple AV guard which has the best virus detection among the anti virus programs. even PC worlds No 1 rank is avira.. check it out

http://www.pcworld.com/reviews/collection/1597/fre...

, Avira AntiVir and Avast, is the best freeware product.

Read more. http://the-best-free-antivirus-software.blogspot.c...

I will go with AVIRA because it scan more virus and and protect virus even before it is install in your PC.

AVIRA , AVAST , AVG , you can get it free , here http://4everythingyouneed.webs.com/download.htm , i run avira in my pc