Here is how to save you terraria worlds/players:
- Open up your documents
- Open my games
- you should see a terraria file, copy it
- paste it onto a memory-stick
- Wait until computer is fixed :) ........................................
- When fixed, download steam again and re-install terraria
- go back into your documents
- then open my games again
- delete the terraria file inside the folder
- paste in the old one of the memory stick
- Load terraria and enjoy!!!
- Tip: Don't forget your terraria server config!!!