I think my desktop have a bug or virus because its running really slowly than usually. How can I check if I do

Question

have a virus b/c my trail anti virus scan ran out so scanning isnt a choice. Also do I really have 2 go 2 the store and but an anti-virus program or sercuity program? if so which are the top 3 brands 2 get nad can I download it from the internet?

lol i spell buy* wrong srry

and and* grr cant spelled when Im stress lol i hate my computer now:(

Answer 1

Use these scnas to find any bugs and remove them.

All of these are ones that I personally use and all are free.

AVG Removes I-Worm/Stration · BackDoor.Generic3.GBB and .GBC · Worm/Generic.FX · Exploit.WMF
http://free.grisoft.com/doc/5390/lng/us/tpl/v5

Spybot - Search & Destroy detects and removes spyware, a relatively new kind of threat not yet covered by common anti-virus applications. Spyware silently tracks your surfing behaviour to create a marketing profile for you that is transmitted without your knowledge to the compilers and sold to advertising companies. If you see new toolbars in your Internet Explorer that you haven't intentionally installed, if your browser crashes inexplicably, or if your home page has been "hijacked" (or changed without your knowledge), your computer is most probably infected with spyware. Even if you don't see the symptoms, your computer may be infected, because more and more spyware is emerging. Spybot-S&D is free, so there's no harm giving it a try to see if something has invaded your computer.
http://www.safer-networking.org/

http://superantispyware.com/
SUPERAntiSpyware is the most thorough scanner on the market. Our Multi-Dimensional Scanning and Process Interrogation Technology will detect spyware that other products miss! SUPERAntiSpyware will remove ALL the Spyware, NOT just the easy ones!
Easily remove over 100,000 pests such as SmitFraud, Vundo, WinFixer, SpyAxe, SpyFalcon, WinAntiVirus, AntiVermins and thousands more!
Make sure after you download any of these, that you update them.

*Be sure to come back to Yahoo Q&A and vote for one of the answers as best answer!

Answer 2

download these great tools. http://www.microsoft.com/security/malwareremove/default.mspx. also http://avast.com/eng/download-avast-home.html. also http://www.safer-networking.org/en/mirrors/index.html. All free software programs and all great. Good luck. Mikie.

Answer 3

Here you have some good and free antivirus programs:
http://askcomputerexpert.ws43.com/download/
Get one!

Answer 4

This is the best i know of and all are free