Quote (DeXaFiLaH @ Aug 1 2015 12:15am)
You can get a key for 8.1 for like $18 on /r/microsoftsoftwareswap
All you would need to do is input the key to activate it is enter the key. From there, just run Windows Update and get Windows 10.
Definitely checking reddit out
But where would I input the key to activate it?