I'm getting my friend to update to w10 today, before the free upgrade expires. The problem is, he says he no longer gets the update notification. I'm not sure if he used never 10 or what.
My question is, I already have a boot thumb drive with Windows 10 on it. What do I do when it asks for a registration key when I'm installing windows 10. AFAIK, when you upgrade your current installation, it uses your old windows 7/8 key.
I know when I installed windows 10,i used my windows 8 key and it worked fine. My friends computer is a Dell with OEM windows 7. Should I just take the key off the back of the case and use that?