Hi had a similar thing happen to a friend and sorted her pc out by downloading a file from beeping computer , it might be worth a try and dont worry its a safe prog.
RKill is a program developed at BleepingComputer.com that was originally designed for the use in our virus removal guides. It was created so that we could have an easy to use tool that kills known processes and remove Windows Registry entries that stop a user from using their normal security applications. Simple as that. Nothing fancy. Just kill known malware processes and clean up some Registry keys so that your security programs can do their job.
good luck hope you get it sorted
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