I'm running window vista. One day, the security center service is turned off suddenly for no obivious reasons. I tried to turn it back on, but it didn't work. Any ideas or suggestion would be appreciated.
Thank you so much for your help!!! After I run comofix, I was able to turn the security center service back on, but I still haven't fix the entry you told me to. Do I still have to fix it? I've posed the combofix log.
