Any config settings you can share would be helpful.. I'm kinda out of ideas at this point.. :-/
I'm assuming the most likely causes of the VM failing to boot is to do with graphics, networking or other devices; no real evidence for this just a gut feel after 30 years working with IT hardware & infrastructure.
So, a few of the config settings I have on my Venturer VM:
Options
Sharing : Share custom folders, share cloud folders Map Mac volumes to VM - all ticked
Full Screen - no
Picture in Picture: enabled but never us it
More Options:
- Time : sync from Mac
- Share clipboard enabled
- Update Parallels tools auto - enabled
Hardware
CPU & Memory : 2 Processors; 6GB RAM
Graphics: Memory - 64MB; Resolution: Best for Retina display (host is a 5k 27" iMac)
Network: Shared Network. Advanced: Virtue network adapter (I haven't set this, so presumably the default)
USB & Bluetooth:
- Share BT devices and Share smart card devices - both disabled
- USB Connection Preferences - all devices are Mac only; and Ask for those added whilst VM running
- Advances: USB 3.1 - Enabled
All the rest default other than SmartGuard enabled in
Backup
Any config settings that I changed I did before upgrading to Venturer.
Hope all that helps...