What if your computer says runs on Vista?
Vista is just a version of Windows; the version after Windows XP
and before Windows 7. If a machine is Vista-ready or
Vista-compatible, it just means that the hardware and available
drivers are compatible with Windows Vista. You might be able to run
that PC on Windows 7 or 8, but it depends, and you would have to
check with the manufacturer to find out what all it is compatible
with.