Virus Need Help!

I am very sorry and i understand that this is not the place to put this thread but im in dire need of help!!

My computer has some kind of viruse and i dont know what it is.. i need to get rid of it!!

Okay.. so i tried to go to sites like bitdefender.com or trendmicro for the online scan.. and it says the page can not be displayed and also when i type those sites into google they redirect me to all kinds of advertising sites.. or other search sites.. as a matteraffact anything that is related to antivirus it just redirects me..

i tried running avg on safe mode.. still no luck..
Can sombody please tell me how to get rid of this asap!!

thanks! Please