Windows 10: Replacing lost physical Windows key

I recently moved to Japan. I had my PC shipped to Japan with UPS. It was stolen. I had a USB with the Windows installer on it from that PC. Sadly, the key doesn't stay with the installer I created. I built a new PC and used that USB to install Windows, but now it wants me to activate Windows with a key. I refuse to buy a new key. Is there a way to find a physical key on my Microsoft account from my previous machine? I mean, I linked my Microsoft account as my login for my previous PC. The device is still in my account despite being stolen so I figured I could email support and see if they coul

:)

 

Lost xp key.

i lost my XP key. And i need it.
Is there a way to find the XP key i am using now in Windows?

Thanks.

 

lost windows activation key, need new free os thats just as easy as windows

I confirmed this, although it listed a different product key than the one given for my copy of XP. 0.o

 

Dual boots from a single physical drive

OK, @churin, the next step is to try to get that second EFI system partition to boot Windows 8 directly. In a command prompt with admin run:
Code:

Now, similar to my computer below:




The last partition in your list should be a 99 or 100 MB system partition, but it will have a different partition number. You want to continue in the same command prompt window with:

Code:

Now reboot your computer and see if you can get that EFI system partition (Windows Boot Manager) to boot directly into Windows 8. If you can, we move on to the next steps.