letmedance wrote:
Most computers today can boot from a thumb drive, in the boot process the bios searches each possible boot device until it finds one that works. In your setup you can chose the order of boot devices, set your 1st device as the HDD, this may help.
Correct. During boot, it’s apparently looking for Windows in the USB drive, and when it doesn’t find it, then finally going to the HD drive. Go into the BIOS (typically you’ll hold down the Del key in the boot process when prompted by the splash screen), go into the boot sub menu, and make sure that the HD is first in the sequence.