Please recommend me for order license new window 8.1 downgrade to window 7 professional (OEM) 40 license we will planning to install new window 7 professional in the old PC
we can order product version OEM for activate in PC HP DC 7900 small factor (The old PC HP DC 7900 install window vista ) or not ?
I want to saved cost for order version OEM not order version open license because we will plan order new PC 2 next year