I scanned my computer today and two infected files came up. It says "Threat:Rootkit:hidden file" under "Status", but when I try to move them to the virus chest, I get an error message that says that the "request is not supported (50)". When I try to delete them, I get a message saying "the system could not find the file specified (2)". And this happens for both of them. What am I supposed to do?