I have been introduced to modding quite recently and have been installing a rather large amount of mods and will test after each mod to see if it has installed properly. At some point I installed a mod that required replacing and adding a lot of codes and it worked, but after some time I saw the mod had too many bugs to even be used so I uninstalled it, and the game speeds up and slows down randomly as I play (not refering to FPS), and eventualy the game just stopped working entirely. the game just loads fully and when the screen fades to black it just stays black. it doesn't actually play the game.
I thought it was because i uninstalled it incorrectly, so I copied my stock copy so i could start all over again, and i installed every mod i had before the one with the bugs. it did the same thing. so i tried to play my stock copy to see if my PC was the problem. It worked, then I installed my texture pack. It worked. then i got to the CLEO mods, and it crashed the same way it did before.
My CLEO mods never acted weird before, so i think my PC may be rejecting the CLEO mods for some reason. I have scanned my PC for viruses and it didnt find any. I have no idea how to fix this.