How to fix Windows 7 ERROR 0xc00000e9 unable to boot August 01, 2017 Windows 7 unable to boot due to Error 0xc00000e9 Problem: Status: 0xc00000e9 Info: An unexpected I/O error has occured Solution: Power-off your computer then disconnect/reconnect your Harddrive, and RAM (based on my personal experience) Read more