Most Valuable Professional
Group: Forum Members
If you have a recent Reflect backup, booting into Rescue and restoring from that is probably the easiest way forward here. If your current disk state has important data that wasn't captured in your most recent backup, then while booted into Rescue you can first create a new backup of your disk in its current unbootable state just to capture that data before restoring your most recent good backup, then mount that unbootable backup later to extract whatever files you need from it. If you don't have any good backups to restore from, if you can get into the Windows Recovery environment, you may be able to use Microsoft's own System Restore function.
And to confirm, the patch you're referring to is a Reflect patch, namely V7.1.2833? And are you seeing a blue screen or anything that might contain information that would help diagnose underlying cause?