If you can find any config file for the enb then load it into notepad and look for the key then change it. I would check the actual athors enb's forums or maybe a kind person can point you there or maybe tell you how to do it.
I think there's a way via the enb's INI file to reconfigure the key bind for showing its overlay.
Do not panic - this just means the ENB was successfully loaded The text will go away after a few seconds Once you have loaded your save game, use the tilde key to open the console window (I find it is easier to control the ENB ingame menu from here) Press Shift+Enter to open the ENB ingame menu - This should appear.
