Issues getting to OOBE stage

[lqbert]

I'm attempting to install Win11 Pro as a VM with the unedited autounattend.xml file included in the ISO (I tried both Virtual Box and VMWare Player). It never gets to the OOBE portion after multiple hours. I get usually a black screen with a Windows "locked" type screen with the time showing, from time to time. If I interact with the "lock" screen, it usually flashes back to the black screen. Sometimes the lock screen stays visible long enough for me to press "Enter" and see a login screen for "Default User", but then it immediately goes back to the black screen or the lock screen.... very flaky acting... any ideas on how to go about fixing this?