Well , I thought :" I can make my game prettier ! So ENB "! I started with MillENB . It was zero problems . But now I installed 47 ENB ... Trying to turn on my game . It comes with a mini window of black screen , and the game crashes instantly . Clean ENB - The same thing . What should I do ? I turned ON and OFF every option as instructions says . BTW . It's my first time with ENB's

I think I know the problem you have,remove the d3d9.dll file from you fallout folder.
If this does not help you put it back in , check the ENB local.inil and try setting borderless fulscreen to "true"

I had the same problem. What I did is very simple, I open Fallout New Vegas as admin everytime. It didn't work when I had the application to always open as admin, I had to do it manually everytime I open it New Vegas. Hope you understood what I said   .

As mpaz96 suggested, try running it with administrator if you hadn't already. My game crashes too if I don't .

Try Running it as adminstrator right click your fallout new vegas or Nvse in this case as it is needed to run fallout's enb series; go to properties and you should see a box named "run as adminstrator" tick that box and click apply now you shouldnt get that pesky crash anymore hope this helped man :3

You could also have things turned on that could prevent your game from loading. For instance "AA" or "Water Multisampling". Do you have your d3d9.dll file in your "fallout New Vegas" folder, not the one you put the enb in, the one that gets created when you load up a game for the first time using an enb.

DiamondDogVS wrote:

You could also have things turned on that could prevent your game from loading. For instance "AA" or "Water Multisampling". Do you have your d3d9.dll file in your "fallout New Vegas" folder, not the one you put the enb in, the one that gets created when you load up a game for the first time using an enb.

That maybe true also, try doing what he said see if AA is off and Check if HDR is ticked in the launcher as it is needed to run ENBs

Jac0b, i had a similar problem that i solved a few hours ago, i even made a post for help but, i kinda solved it myself. Try to update your windows and/or your NET Framework, which i believed was my problem. Since a very long time ago(few weeks), my Windows update was having a error (8070422 was the error), and it wasn't updating, so a lot of problems started to occour on my computer, and i knew it was related to my ENB problems, call it a hunch, and i was right.
If you having a similar problem with your windows update, i might be usefull to you, so, if you need just ask, since i came across a ton of solutions for many windows update related errors.
If that isn't your case, try to update your drivers, directx, and one solution for some other games that i had trouble with enbs, copy your d3d9.dll to your sys32 folder, and replace if you have to, JUST DON'T FORGET TO MAKE A BACKUP OF THE FILE THAT IS GOING TO BE REPLACED!!!!.
Those are the solutions to most problems you'll encouter, if any of this works, try to download and reinstall the ENBs presets, and aways looking for any corrupted files if you don't use a manager for downloading. I hope that this helps you out, i know how this things are annoying.