An unexpected I/O error has occurred. Error code: 0xc00000e9

Causes of Windows 0xc00000e9 Error Code

The 0xc00000e9 error code always has to do with the boot process for Windows. An I/O error, or input/output error, occurs when the system is unable to access a drive or disk, which means it cannot read or copy data. Because it’s common, there are many reasons why the error might appear:

Malfunctioning external hardware or PC components. Damaged input or output ports. Incorrectly seated components such as a disconnected hard drive that doesn’t make contact with the motherboard. Improperly configured UEFI, BIOS, or CMOS settings. Corrupt system files or Windows Registry problems. Problems with Windows Update. A boot sector virus or other malware.

How to Fix 0xc00000e9 Errors in Windows 10, 8, 7, and Vista

Try these steps in order until the error goes away: