Need to be install below
Microsoft Virtual Machine Converter 3.0
Run "Powershell" fix source and destination folders
on prompt : PS C:\>
Import-Module “R:\Down\cv\mvmcCmdlet.psd1”
ConvertTo-MvmcVirtualHardDisk -SourceLiteralPath "F:\VM\_HDD\Windows 10 x64.vmdk" -DestinationLiteralPath "F:\Hyper-V\Virtual hard disks\pgdc" -VhdType DynamicHardDisk -VhdFormat Vhd.