ENB replaces alot of files, and I know those were uninstalled, and I replaced the d3d with another mod when I applied them afterwords. And I also deleted all the loose ENB files that were in the root folder. Also I've never updated my drivers since I got my comp (late last summer/early fall I think, and I haven't because it just doesn't want to find updates, adn when I try to update my catalyst panel, It crashes, so I don't even want to mess with driver updates.
PS as for GTA IV, I will uninstall it and check for any loose files, and delete any, and try booting with absolutely no mods, then apply them one by one.
EDIT: I just checked and it seemed to delete the ever single thing, including the folder itself.
EDIT 2: So, I reinstalled and now it works, but I'm on patch 1.0.0.0 or the first patch, whatever, and I'm running at 3fps -_- , but at least I got the damned thing to start. I'm going to apply the 1.0.7.0 patch that I downloaded from the Rockstar website.