I stupidly deleted my one and only save some weeks back (I only play one character) - some blessed individual taught me this resurrection spell. Go to
C:\Users\\Documents\My Games\Skyrim\SavesIn there you'll see files named
autosave.ess.bak or
Save .ess.bakLook for the dates and times they were created, and choose the one(s) you want to bring back to life.
Rightclick to rename it and, delete the ".bak"so its filename now ends with the ".ess". The .bak makes it a back-up file, so your game doesn't show it at the loading screen; remove the .bak, and the game can see it again. When you reload the game it should appear there as normal.
This absolutely saved my life, and the lives of the many many people I would have slaughtered on the inevitable killing spree I would have committed if I couldn't get my character back. I hope it helps you too.