It is the first thing you need to fix the issue as stated above. For that, you need to run the virtual machine showing the error and go to the Devices > Install Guest ...
Normally, if you are unable to boot into Windows and cannot access your files, you can create a bootable drive and use the media to boot and repair your OS installation. Perhaps, not widely known by ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results