OUCH! do you have any backup? if you have tried in safe mode and still nothing then sounds like it needs to be reinstalled.
Why did you not have any Antivirus? there are so many free ones best one being Microsoft Essentials.
Have you tried unplugging from the mains and leaveing for a while ( say an hour) then trying. If you can reboot you NEED an antivirus and Antimalware.
If your going to use the likes of torrents then you should have a decent AV set up as these are prone to trojans etc.
Maybe if you can be more specific with what IOS you are running and some other details about your laptop the guys can help you. Have you got a copy of your operating system? What make Laptop do you have as you could try presing on of the F keys - but not sure which one as think it depends on which make model you have. F12 on mine (i think) takes me to recover - worth a try!