This bug check indicates that the initialization of the Microsoft Windows operating system failed.
Any part of the disk subsystem can cause the PROCESS1_INITIALIZATION_FAILED bug check, including:
- bad disks
- bad or incorrect cables
- mixing different ATA-type devices on the same chain, or drives that are not available because of hardware regeneration
- a missing file from the boot partition
- a driver that a user accidentally disabled in the Drivers tab