It began when I decided to try another mod so I downloaded it and tried it on, but after logging in the game I didn't like it and logged out to delete that mod. Whenever I tried to enter skyrim, it would close off after the skyrim logo appears so I re-started my comp and now it won't even open but say " Aplication load error P:0000065432" or Skyrim failed to start (error code 80). I verified the game, looked for a steam update (it said up-to-date and my other steam games work.). How do I do this? Anyone know the answer? Will I be able to keep my saved files?

Are you sure you removed all the files from that mod?

If you mess up a mod install enough, you may have to reinstall the game.

In my case, this was caused by installing the new nVidia 295.51 driver. Switching back to 290.53 fixed it.