Just got a new HP 260-A020, but I've used Windows 10 at the library for 3 weeks in the interim and have no use for the clumsy, stupid, overwrought thing even if not for its Big Brother reputation. (also security software 3 deep atop pull-the-plug paranoia, never had a hint of malware, so Win7 is plenty secure enough for a few years).
...The old hard drive is still good, so I'm planning to drop that into an external enclosure to recover 2-3 files which weren't backed up, use that first as the boot drive, and then for the time being as backup with Windows7 on the machine itself.
...EXCEPT - Warnings from Best Buy sales & Geek Squad, plus posts here about how a "modern" machine might not recognize the old drivers - not just LaserJet but serious stuff like video, network, HDD, USB etc.
...But over the months before July 29 I saw a hundred suggestions to put either 7 or 10 on a bootable drive/partition by way of hedging against the transition, and never a mention of this problem. So a native Win7 machine works fine with Win10 and new drivers but not vice-versa? or did a Win10 download preserve the old drivers?
