What if you disable all the drives except the stick. Does it boot? I don't mean the boot option.
Find Drive Settings:
Navigate to the SATA Configuration or a similar section. This is often found under Advanced Settings or Integrated Peripherals.
Disable the Hard Drive:
Locate the list of connected drives (SATA or IDE devices) and select the HDD you want to disable.
Change the status to Disabled, or turn off the relevant SATA port