I've built a new pc and for os i used a flash drive with windows 10 that i created from my old pc.It isn't activated so what i did was get the windows 10 key from my old system and use it to my new one.I disabled the key from my old computer.Now i've tried putting it more than a dozen times and it doesnt let me because it says that the key didnt work.
What should i do to make it work?
*also the other system was prebuilt.
What should i do to make it work?
*also the other system was prebuilt.