Intel Core 2 Quad Q9400 2.66 GHz | AMD Athlon II X4 650 3.20 GHzĪTI Radeon HD 5850 or NVIDIA GeForce GTX470 with 1GB VRAM Here are the minimum system requirements to run HOI4: Operating System : Many players are reporting that Hearts of Iron 4 crashes on their PC, and sometimes this problem can be caused by your hardware. Verify the integrity of your game files.You may not have to try them all just work your way down the list until you find the one that works for you. After reading this article, you should be able to fix it. Hearts of Iron IV (HOI4) keeps crashing on your PC? Don’t worry.