Error booting Windows 10 system under Virtualbox

In preparation for moving to a new Macbook Pro, I am trying to find a home for my Intel dependent tasks. One such is the Win 10 system that I run under Parallels. I would like to move it to run under Virtualbox on a PC. I have extracted the .hds file from the .pvm package and renamed it to .hdd and added to VB but when I boot it gives an error: “Unexpected Kernel Mode trap”. Based on previous posts related to migrating Win 10 from Parallels to VB, I also tried using the prl_disk_tools command to convert the file to plain first and then add it to VB with the same result. Any help in getting this migrated disk to boot under VB would be greatly appreciated.