My Lenovo laptop came pre-installed with Windows 7 64 when I bought it a few years ago. It was fully updated, etc. when I upgraded to Windows 10 last week without issue. But MS is saying that it needs to be activated and is not genuine. Honestly, I am stumped because two other laptops and two PCs that I upgraded within the same week recognizes 10. Now I can run the laptop fine, do work, etc. But the "Check for Updates" is grayed out. I sure could use your advice. Thanks.