: Press the power button and immediately start tapping the hotkey (don’t just hold it down).
: Ensure the device is fully powered off, not just in sleep mode. cepter boot menu key
If you are tapping the keys but Windows loads normally, check the following settings: : Press the power button and immediately start
: Use the arrow keys to select your USB drive or external hard drive and press Enter . Troubleshooting: If the Key Doesn't Work cepter boot menu key
This method is the most reliable because the keyboard driver is active immediately upon powering on.
: Tap F12 or Esc until the Boot Manager screen appears.