OStatic

I have installed chrome last week.. It was working fine at that time. There was a torjan/virus infection on my winlogon.exe recently and I realized this when I have to start my computer two times, in order to succesffully login to the system.. Anyway AVG antivirus has found and cleaned the virus. I made a full system search with it and also used Spyware Doctor for a possible spyware infection too.. Now as far as I see there is nothing in the system.. However chrome started to not work on any site giving the error belows. iexplorer and firefox seems to be working on some basic sites and for some others giving "Content Encoding Error".(Eventhough I have reinstalled them)
Chrom is giving (net::ERR_FAILED): for all sites... I don't want to reinstall whole system just for this strange situation. any suggestions?