I have two identical computers running on broadband, one the security center is working w/firwal, malware,etc everything working; the other says the Security Service was stopped or not started; asks if want to start (yes/no) click Yes, then msg cannot start dependence on some device or something; Error 1068 i believe. so, cannot turn Firewall on (same msg), change settings or anything. think someone may have tried to do something and messed it up. i am admin with multiple limited users on community pc. just installed Micro Security Essentials (on both pc's). only one has this problem-virtually the same in software & hardware.