I 'beleive' W7 is supposed to be supported until 2020 so it 'should' work on hardware to a few years past that but no more security updates from MS (not sure how big a problem that would be for home users?)
Mainstream support for Windows 7 ended on January 13, 2015. This means that no new Service Packs are coming for Windows 7, and no new features will be added to the operating system. It does not, however, mean that Microsoft is no longer patching the operating system.
Extended support is still ongoing until January 14, 2020. That’s the date Microsoft will stop issuing new security updates for Windows 7.
