hmm when those type of things happen it sounds like a hardware compatibility issue. LW is simply the catalyst that sets it off but not the cause. See Limewire and Blue Screen of Death (click on link). But if there's no BSD, then it may be an over-heating issue. Your fan may need upgrading also to cater for the higher capacity CPU & drives. Also check heat-sinks. You did remember to put them back in right lol