In the world of technology and cybersecurity, it's essential to know how to securely navigate your devices, especially when dealing with password-protected systems. One common scenario that many users face is the need to boot from a USB drive or CD on Windows 8.1 with keyboard prompts to bypass password.

Follow these steps to boot from USB or CD on Windows 8.1:

1. Insert the USB drive or CD into the appropriate port on your computer.
2. Restart your computer and continuously press the BIOS key (usually F2, F12, ESC, or DEL) to enter the BIOS setup.
3. In the BIOS setup, navigate to the Boot tab using the arrow keys on your keyboard.
4. Change the boot order sequence to prioritize the USB drive or CD drive as the first boot device.
5. Save your changes and exit the BIOS setup by following the on-screen prompts.
6. Your computer will now restart and boot from the USB drive or CD.
7. Follow the on-screen instructions to complete the setup or troubleshooting process.

Bypassing the password using keyboard prompts may not always be straightforward and is not recommended for secure systems. It's crucial to ensure that you have the necessary permissions and authorization to access the device without the password.