Well as far as TBT goes, I just lost the PSD files for the three skins. Also, all of my AC renders (which I will have to make again). But the three AC skins are done... and there will be no extra summer one since I can't edit it. That's OK, it can still share spring. And I want to make newer skins anyway... no idea when I'd get around to that though.
losing all the stuff on your computer sucks. A couple years ago my family's desktop died from trying to install a sims game lol and we lost EVERYTHING. My mom was not happy .....