At work, I use a Dell Optiplex 3010 that came with Windows 7 and has been upgraded to Windows 10. We have an older Windows XP system that runs a critical piece of equipment. This Optiplex will become a 'newer' (3 years old instead of 9!) Windows XP system to run that equipment - I have this part set up, XP can boot from another hard drive.
We have spare a Dell Inspiron 3646 that came with Windows 8.1 with Bing and has been upgraded to Windows 10. This will become my new PC when my current one goes out to run our equipment.
I've been working on hunting down installation discs and downloading (our internet connection really sucks) the software I have on my current PC to the Inspiron, and it's really slow going.
Could I just put my current hard drive from the Optiplex into the Inspiron? Would Windows 10 still see itself as authentic?