Downloading online may cause harm to your computer. So it's better to purchase one antivirus available in market.
Microsoft security essentials is the best anti virus/spyware software that is used by most people around the globe. It is easy and trustworthy to use.
First of all install and run Combofix. After install clean copy of any antivirus with good detection rates like Norton, Bitdefender or Kaspersky. Run a deep system scan. After that it should be fixed.
i suggest you to get latest version Kaspersky Anti-virus from any of the search engine or you can get it easily in nearby computer shops.
you just need to go to your nearest IT hardware and software shop ,get your computer formatted and get some good antivirus installed
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