I bought two of these HP desktops that originally came with Vista just before Win7 was released. Both were upgraded to Win7. My wife's machine is still running that same Home Premium version and essentially is on 24/7. My machine has been upgraded from Vista to 7 to 8.0 to 8.1.1 and also is essentially on 24/7. I am dual booting presently and both machines are networked with 3 printers.
So Wynona, drag that Vista desktop out!