Are there any tools or utilities within Windows that can diagnose boot issues before taking further steps?

Here are some tools that will help you to understand and fix reboot and select proper boot device error.

- Startup Repair – Automatically fixes common boot issues from Windows Recovery Environment (WinRE).

- Bootrec.exe – Command-line tool to repair the Master Boot Record (MBR) and Boot Configuration Data (BCD).

- CHKDSK – Checks for disk errors.

- SFC (System File Checker) – Scans and repairs corrupted system files.

- DiskPart – Manages disk partitions and ensures the correct partition is active.

- BCDEdit – Views and edits boot configurations to fix boot entry issues.

- Event Viewer – Logs system events, helpful for identifying boot-related errors.