How can I remove all adware, spyware, malware, trojans and viruses from my computer?

The guaranteed way to get rid of everything and fix any files that might have been broken/corrupted by all the malware is a complete OS reinstall. Just be sure to backup all your important files. If you want methods that work well, get Avast anti-virus and Spybot Search and Destroy.

Avast is the most crappy antivirus, Malwarebytes is better than it, and thats only an Anti-Malware.

Use combofix from bleepingcomputer.com, then go download malwarebytes from softpedia.com or cnet.com and use it, then clean the rest of the virus with superantispyware from softpedia.com or superantispyware.com, and for future protection use avira as antivirus and a good firewall such as Online Armor or Outpost Firewall or Comodo or PC Tools Firewall Plus.

Go to downloads.com Download,install and run a quick scan of Malwarebytes antimalware. Download, install and run a quick scan of Superantispyware. Download, install and run Ccleaner. Download , install and run a complete computer scan with AVG free edition 8.5. Download install and run Auslogics defragger. All these programs are free. At that point, your computer will probably be as clean as it has ever been. Good luck

http://www.youtube.com/watch?v=OExU9HlW9t0
watch the video

If your computer is infected by trojan, spyware/ adwares/ malwares, you can easily get rid of spywares and adwares by using any free spyware or adware killer tool, you can download the ones which are free.Free programs to download are Spybot S&D, SuperAntiSpyware, Ad-Aware and AVG. Check out http://usefulinfo-comp.blogspot.com/ for more information.