All of a sudden I seem to have picked up a whole host of trojans, such as win32:fakeav-no or win32:fraudo and a whole host of others. I cant see how I've gotten so infected all of a sudden as I am always very careful about emails n attachments etc. Also something seems to be turning off my windows firewall when I reboot? I've run avast n a few anti malware such as Malewarebytes anti malware programs but they always pop back up in an increasing variety. Help!