I couldnt work out how to run safe mode as nothing was working, so i pressed f10 for recovery and went throught the option of reinsatlling windows(but not factory settings as i have alot of stuff on it!) so hopefully this works!
I'll be gutted if i lose my stuff! the irony of it is almost too funny!! I download it to protect the pc and it ends up killing it!
That's a strange one .. I haven't heard any stories of antiviruses completely locking up computer, unless a problem is already on the PC.
I've heard many stories of slow performance or problems but totally stopping the computer sounds more like the sort of thing a virus already on the computer would do when it saw an antivirus being installed.