Thank you for your answer. i tried to re-install. i tired uninstall it first but it failed and everything was removed but the folder remain and i tried to delete the folder access denied. i thought well okay, i downloaded the version off the internet and i got this message, well I'm going attach it now, what error i got. the online scanner failed to update to and scan, I'm very afraid that my computer is effected by virus. what should i do? should i download another anti virus i don't know. please help me out here.