Possible? Downgrade a windows 10 to make it a windows 7

No, I'm not looking for a custom setup on this laptop. If my Vaio ever dies... this info will come in handy.

I have looked and looked online... Best Buy, Adorama, B&H, ...
then this came up this morning. Bingo.

2016 HP Windows 7 Pro for $455.90

I hit the order button... should have it Monday.
NEW - Confirmed NEW -UNOPENED BOX. HP Warranty
(and I got an extended spill/drop 2 yr warranty since this is going on the road with hubby for six months)

Thank you everyone for your input!