Black screen when starting windows after upgrade to 20.0

Hi Jean-Luc,

That sounds incredibly frustrating, especially when you're relying on Parallels for work! The issue with the black screen after the disk check could be related to a corrupt virtual machine file or a problem during the update process. Since you can't access Safe Mode, I would recommend trying to boot from the Windows installation media within Parallels and running a repair. Another option could be restoring the VM from a previous backup if available.

If you haven't already, you might also want to try reaching out to Parallels support directly--they might be able to provide a more targeted fix.

Best of luck, I hope it gets resolved soon!