Sounds like a bad ISO dump then. I just tested here and couldn't reproduce this problem...
HP ENVY dv6t-7300 Notebook PC ASRock Z97M OC Formula
CPU: Intel Core i7-3630QM @ 2.4GHz Intel Pentium G3258 @ 4.2GHz (OC)
GPU: NVIDIA GeForce GT 635M @ 2GB DDR3 NVIDIA GeForce GT 440 @ 1GB DDR3
RAM: 12GB @ DDR3-1600 (4+8GB) 16GB @ DDR3-1600 (4x4GB)
OS: Windows 10 (Insider Preview) Windows 10 (version 1809)
CPU: Intel Core i7-3630QM @ 2.4GHz Intel Pentium G3258 @ 4.2GHz (OC)
GPU: NVIDIA GeForce GT 635M @ 2GB DDR3 NVIDIA GeForce GT 440 @ 1GB DDR3
RAM: 12GB @ DDR3-1600 (4+8GB) 16GB @ DDR3-1600 (4x4GB)
OS: Windows 10 (Insider Preview) Windows 10 (version 1809)