Greetings and welcome to the forums!

What virtualization product are you targeting?

If it's Workstation Pro for Windows then you can attach the hard disk to the Windows host machine, create a new Windows 7 VM in Workstation and use the attached physical disk with that VM.

With an ESXi host you could do something similar if the hard disk is a USB disk.

Alternatively you can use a tool like Starwind Converter (https://www.starwindsoftware.com/starwind-v2v-converter) to convert the physical disk to a virtual disk (VMDK file), and then build a VM with the VMDK file.

- Andreas