Same problem here. Solution was to use Hypervisor from Apple, NOT Parallels:
Steps in german (english):
- Go to your black window of xp
- Push (on a Mac) "ctrl + alt" to release the mouse
- In menu "Aktionen" (actions?) choose "Stopp"
- In menu "Aktionen" (actions?) choose "Konfigurieren" (configuration?)
- Choose tab "Hardware"
- In left column choose "CPU & RAM"
- On right side choose "Erweiterte Einstellungen" (Advanced settings?)
- Change "Hypervisor" from "Parallels" to "Apple"
- Close configuration window for machine "XP - Hardware"
- In menu "Aktionen" (actions?) choose "Start"
This guidance in german in my website:
http://www.macsimum.ch/support/anleitungen
Last edited: Aug 20, 2016