It could be a Trojan take over.Go to Bleepingcomputer.com go to Downloads an run ComboFix then once it is done you will have some programs turned on after running this.Windows Defender,Windows Updates an Security Center.Some of the worst protection programs you can have on your computer.Why you ask.You got infected didn't you?A lot of good they did huh?
Windows updates an others like that do more damage than good.Combofix will remove any trojan programs from your main system an move you to your original desktop.From there run an Anti virus or malware remover to keep it off.Go to run an type %Temp% an enter.You can get to your temp folder.Empty it.Then restart your computer.You should be clean.