It is currently using the parallels ver 12.2.1 (41615) version. My system environment Retina 5k, 27 " and Thunderbolt bolt display monitor is being used together. Unable to boot after upgrading to the win10 creators (1703) version. Same symptom is shown in the another same system. plz help me sorry poor my english , i'm korean
Hello younh, have you tried reinstalling Parallels Tools? If not, please try it once and let us know how it goes.
Hello younh, please login to your virtual machine and open Device Manager (Click on Windows Search Bar type "Run" and hit return and the type "devmgmt.msc") and go to Display Driver uninstall the Parallels Display Adapter WDDM and reinstall the Parallels Tools http://kb.parallels.com/112609 and check it helps. Thanks, Shathish