In case of mistakes and crashes you can also see possible ways
here.
Disable / uninstall your mods. I can't say if these mods work properly, we don't support mods.
Check your installation with
Steam.
Could you upload a savegame?
You found it in
...\Documents\My Games\Skyrim\Saves, we'll need the -.skse and the -.ess of a manual (no quick- or auto-) save
Pack them to a rar or zip archive and attach them to a post here.