Ubuntu wanted to update some CUPS programs and maybe some others. I didn’t pay that much attention to the auto update message before I clicked on it to go ahead. After the updates, none of which were kernel updates, my windows xp guest wouldn’t start correctly. It would make it to a black screen and just hang with no useful information in sight.
I shut down the guest, then removed all the options I could under settings. That allowed Windows XP to boot. I then shut down XP and enabled all the settings I needed and reboot XP. All was well.