Security Center won't stay on

I have been given this Wins 7 laptop which didn't have any antivirus

Subsequent scans revealed a whole load of junk

I have used Combofix - Malwarebytes - Kaspersky Boot Disk

The OS will function but the little blue circle will appear on a regular basis, and security centre wont stay on

I could find combofix results and maybe kaspersky etc if you want

Thanks !

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/512455/security-center-wont-stay-on/