Skyim works well for you and Enderal works well in other places? Then it does not seem to be the PC or any settings-
Because the Savegame worked for us, I assume that your installation is faulty. Probably it's file remnants from incompatible mods.
If you uninstall the mods, there might be some files left, especially if you have only deactivated them.
A possible solution is a clean new installation.
- For this you have to uninstall enderal first
- then delete the following 2 folders: "C:\Users\...\AppData\Local\enderal" and "...\Steam\SteamApps\common\Enderal"
- now delete the 2 -.ini files under C:\Users\...\Documents\my games\Enderal
Then restart Steam and reinstall Enderal without mods and have Fun (i hope

).
(your Skyrim-installation has nothing to do with this, they are completely separate things)