Programs constantly "Not Responding" and then my computer freezes

[Corporate CockSnogger]

Once again, I'm a computer retard so don't really know what I'm doing so any help (in simple steps) would be very much appreciated.

So it all started about a week ago. I was downloading some comic torrents from piratebay, and then all of a sudden all the programs started to not respond and my computer froze. I rebooted it and it happened again, so I assumed it would be the torrents. I messed around with my laptop for a bit, and then just deleted the files I'd downloaded and everything was working fine again. Then I tried downloading a film as I've done plenty of times in the past and it started freezing again, so I just completely uninstalled Vuze as well as deleting any files I'd downloaded in the past few days, and once again it was working fine. I was able to then re-install Vuze and download films as normal again.

Up until I decided to stupidly try and download one of the comics again, this time from kickasstorrents. The same stuff started happening again, so I did the same thing, deleted everything including Vuze, but this time the problem doesn't seem to be going away. I can usually get about 30 minutes before everything starts crashing. I've tried running scans but it always freezes before it's finished.

Any help anyone?