Windows error code 0xc00000e9 is a common Windows Boot Manager error that indicates a hardware failure or a corrupt system file encountered during the boot process. It appears shortly after the computer boots, but before the Windows logon screen, as follows:

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

Try these steps in the order given until the error goes away:

Restart your computer. If you can't log into your computer, perform a hard reset by holding the power button until the computer turns off, then turn it back on.