I just got Parallels and tested it out with the W10 development (free) platform and it all worked well. So I purchased Parallels 12 and W10 (I think for home cannot recall right now). After I start W10 - within 5 to 10 minutes my Mac crashes - consistently - every time. I removed W10 and reinstalled it with the same results. One of my cohorts suggested I downgrade Parallels to version 11 as he doesn't have any issues at all. As a newbie - not sure if this is the right place to post. When I searched for something similar I did not see any results. Thank you for any suggestions/directions to troubleshoot this. Scott