Steps:

Basic:

Restart Your Computer:

• Power off the computer and turn it back on to confirm the error is persistent.

Check Boot Order:

• Access the BIOS/UEFI by pressing F2, F12, Del, or Esc (varies by manufacturer) during startup.
• Ensure the correct drive (where Windows is installed) is set as the primary boot device.

Intermediate:

Use Automatic Repair:

• Insert a Windows installation USB/DVD and boot from it.
• Select Repair your computer > Troubleshoot > Advanced Options > Startup Repair.

Rebuild the Boot Configuration Data (BCD):

• Boot from the Windows installation USB/DVD.
• Open Command Prompt (Shift + F10 or through the Advanced Options > Command Prompt).
• Run the commands:

Advanced:

5. Check for Drive Issues:
   • In Command Prompt, type:

• Replace C: with the drive where Windows is installed.