I think Koby, you are onto something. All the PCs that crash in my office have Intel processors with built in video display. But I had older PCs that had Windows 7, as soon as I upgraded Windows to Windows 10, the AC started crashing on them. I had similar issue with Windows 7 to 10 upgrade 2-3 years ago and reverted PCs back to Windows 7 pro and they worked fine. Previously, AC would freeze and the top bar on script writer would turn red with a security Officer like icon on it. I am not sure if all those PCs had built in graphic display. From my experience, the issue is with the way AC opens a 3rd window within the program and interacts with the processor and the Windows 10. I am not sure what it is. I will try changing the display on the PCs. Thanks for the suggestion!