There is a thing on my computer called DEP (Data Execution Prevention) and when ever I try to run GTA IV that thing shuts it down and says program not responding or something. I tried running GTA Iv as an administrator but that was the same result. I really need help because i am in a clan and i need GTA to work so i can be there PLEASE help. (PS: I would also like to know [if this works] how to make my game run faster so i can speed on patrols in my clan) THANK YOU :D