Am running Win7 Ultimate x32 (default) in dual boot with Win 7 HP x32 with Security Essential as AV progm in both. Problem occured with Internet Explorer 9 behaving erratically, pages of different sites opening up when IE was idle. My Security Essentials shut down with an error message 'the windows security center service can't be started' 1: Downloaded and scanned with Kaspersky Virus Removal tool and Super Antispyware. Malicious Files were detected and deleted, cleaned the registry with Live One Care Scanner. 2: Reset my IE9 Beta. 3: Uninstalled Security Essentials and reinstalled it. 4: Tried 'services.msc'with admin power -double click 'Security Center'-chose start automatically-ok.Restart. 5: Ran, with admin rights, Run- sfc.exe /scannow. 6: Tried installing McAfee Security Center Beta, wasn't permitted install by system. Did most of the things prescribed in the following links but still have the dreaded red mark on my Action Center in the Tray: http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/76b08f80-f547-473c-b43f-4029afefac02 http://support.microsoft.com/ph/14019#tab1 http://social.technet.microsoft.com/Forums/en/itprovistasecurity/thread/c8845953-5e1a-40de-b79a-dda05bbf9488 http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/9f110c9e-7553-49ba-9b25-b27dd61a1197 http://social.technet.microsoft.com/Forums/en/w7itprosecurity/thread/14dab59d-d5aa-4c45-a7ca-f8140cef2a44 At present the system is working perfectly except that I am unable to start the Secutity Center. Some wizard out there please help,don't want a reinstall of Windows or recovery from a System BackUp. Irfan