Saw the same thing as everyone here described, but if you stick the USB stick into the PC to be installed, everything boots right up. Windoze doesn’t recognize Linux file systems so it only sees the boot partition.
USB Drive: SanDisk Ultra Fit 128GB USB 3.0 Flash Drive - SDCZ43-128G-GAM46
ISO FIle: linuxmint-19-cinnamon-64bit-v2.iso
Host OS: Windoze 64