I see this is not the first time this title has been posted.
Windows Security Center service cannot be started
Though it seems asking my own questions and responding to your prompts is the way forward.
I am a newbie to Win7x64. Two days. I do not believe the issue is virus related.
I have installed Kaspersky ISS 2013 & Appguard for security.
I have turned off 'windows defender' by following a 'tweak prompt'.
'Scannow' says the system is clean - no integrity violations.
I dont know what the WSC is, I'll be happy to just turn off these annoying ding-dong alerts in my headfones.