MAK is so OP. Now I cannot get back my retail key to reinstall my Window LOL

Anyway to fix it?

Yes. it is activated. i just checked.
I upgraded this PC from 8.1 to 10 a week ago. I should have used showKeyPlus before upgrading this PC

showKeyPlus worked in one of my PC (upgraded from 8.1 retail to window 10)
It can show the original Key of window 8.1

But showKeyPlus doesn't work on my another PC (upgraded from window 7 to...

I read something on some websites that I dont need to input my window 10 key again even i do a clean install.
Because there is something called "digital entitlement" that registered my window 10...

I successfully recovered my Key using showKeyPlus LOL
I think i should create an installation media, showKeyPlus says that I am using a retail version lol.
Seems like I can install it to another...

so can i recovery my key using that key tool even i upgraded my window 10 from window 8??
I think I should read it myself lol:)

seems like recovery usb drive is not that useful, because if my harddisk is dead, i cannot recovery my PC by using that drive.
The only scenario that I will use USB drive recover is that if my...

so USB drive recovery does not work if there is any hardware change???

If i replace my harddisk(my harddisk is installed with window and I only have one harddisk) with a new one while keeping all other hardware unchanged,
Can I use usb Drive to do recovery ??? or I...

Thanks for welcoming me, thanks for helping me.
Clean install vs USB recovery, is it correct???
1. clean install require me to enter product key while usb recovery do not.
2. both Clean install...

Thanks for replying!!!
But for question 2, I am not using OEM window, I am using retail version of window, but I lost the key :(
( I am not quite sure whether it is OEM or retail, because my...

Sorry i am too stupid to understand, Please help if you can.
Questions:
1. If my harddisk is dead, can i reset my PC using the recovery usb drive after replacing my harddisk???
2. If Yes, Do I...