Trojan Virus keeps redirecting my page to a different site?

[KilieLaurissa]

There is a trojan that keeps redirecting my google pages to different sites. Please, can anyone tell me how to get rid of this trojan because even through the AVG that I downloaded, it still doesn't find the trojan and my computer is running really slow.. :-(

[william8411]

I was such a case, please help :(

[Evill]

It is best that you reinstall your operating system