When I installed Windows 10 Enterprise LTSB from ISO during launch date, it had no problem. Now when I install the same Windows 10 ISO on the same computer freshly formatted, there is a problem with the customization of install settings. After it asks me to choose Express or Customized settings, and I customize the settings (turning everything to off for privacy), it hangs for a minute and flashes the desktop for a second, then reboots. It then asks me to do the customize settings again. It accepts the customized settings the second time round. Why is it doing this now, when it did not before? Nothing changed, identical hardware. Network cable is unplugged. I am afraid it is some new virus hijacking the Windows 10 during the install process. Of course running anti virus program finds nothing, could it be some undetectable virus?