I am pretty sure I uninstalled everything and even deleted the entire "Oblivion" folder from the Bethesda Softworks directory. However, I noticed that when I opened up Wrye Bash it was apparently a bit confused, thinking that I still had mods that I no longer have. So then I also uninstalled everything having to do with Wrye Bash. I can't find any Mod Manager files so I'm not 100 percent certain that it was removed properly.
Anyway, I reinstalled Oblivion and the Shivering Isles/KotN from the Game of the Year disks that I bought a few years ago. Now every time I try to launch it, even vanilla, it crashes as soon as it gets past the "Bethesda" splash. Now my game is 100 percent unplayable and I have no knowledge of how to fix it. Please help...