If your computer can not get a free upgrade to win 10, I think you need a genuine product key to upgrade it. Here is what I share some of the secret key used for free for everyone. If it does not work. Can visit: http://goo.gl/ELtuZZ
Win 10 Home Key
TX9XD-98N7V-6WMQ6-BX7FG-H8Q99
3KHY7-WNT83-DGQKR-F7HPR-844BM
7HNRX-D7KGG-3K4RQ-4WPJ4-YTDFH
PVMJN-6DFY6-9CCP6-7BKTT-D3WVR
Win 10 Professional Key
W269N-WFGWX-YVC9B-4J6C9-T83GX
MH37W-N47XK-V7XM9-C7227-GCQG9
Win10 Enterprise Key
NPPR9-FWDCX-D2C8J-H872K-2YT43
DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4
WNMTR-4C88C-JK8YV-HQ7T2-76DF9
2F77B-TNFGY-69QQF-B8YKP-D69TJ
